Remove API references

Author: lcapelluto

qiskit/advanced/terra/programming_with_pulses/building_pulse_schedules.ipynb

@@ -18,11 +18,11 @@
    "source": [
     "# Building Pulse Schedules\n",
     "\n",
-    "Building [`Schedule`](https://qiskit.org/documentation/api/qiskit.pulse.Schedule.html#qiskit.pulse.Schedule)s is very straightforward, yet there are a few ways to compose them. We're going to explore these different methods here.\n",
+    "Building `Schedule`s is very straightforward, yet there are a few ways to compose them. We're going to explore these different methods here.\n",
     "\n",
-    "Tip: [`Instruction`](https://qiskit.org/documentation/api/qiskit.pulse.Instruction.html#qiskit.pulse.Instruction)s can be treated just like [`Schedule`](https://qiskit.org/documentation/api/qiskit.pulse.Schedule.html#qiskit.pulse.Schedule)s -- that means all the methods we use here work equally well for composing [`Schedule`](https://qiskit.org/documentation/api/qiskit.pulse.Schedule.html#qiskit.pulse.Schedule)s with [`Schedule`](https://qiskit.org/documentation/api/qiskit.pulse.Schedule.html#qiskit.pulse.Schedule)s, [`Instruction`](https://qiskit.org/documentation/api/qiskit.pulse.Instruction.html#qiskit.pulse.Instruction)s with [`Instruction`](https://qiskit.org/documentation/api/qiskit.pulse.Instruction.html#qiskit.pulse.Instruction)s, or between the two.\n",
+    "Tip: `Instruction`s can be treated just like `Schedule`s -- that means all the methods we use here work equally well for composing `Schedule`s with `Schedule`s, `Instruction`s with `Instruction`s, or between the two.\n",
     "\n",
-    "As the basis for trying out the composition methods, let's initialize a couple dummy [`Schedule`](https://qiskit.org/documentation/api/qiskit.pulse.Schedule.html#qiskit.pulse.Schedule)s."
+    "As the basis for trying out the composition methods, let's initialize a couple dummy `Schedule`s."
    ]
   },
   {
@@ -41,11 +41,11 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "### [`insert`](https://qiskit.org/documentation/api/qiskit.pulse.Schedule.html#qiskit.pulse.Schedule.insert) or `|`\n",
+    "### `insert` or `|`\n",
     "\n",
-    "The [`insert`](https://qiskit.org/documentation/api/qiskit.pulse.Schedule.html#qiskit.pulse.Schedule.insert) method schedules an [`Instruction`](https://qiskit.org/documentation/api/qiskit.pulse.Instruction.html#qiskit.pulse.Instruction) or [`Schedule`](https://qiskit.org/documentation/api/qiskit.pulse.Schedule.html#qiskit.pulse.Schedule) at a particular time. Let's use it to give each of our schedules a different instruction.\n",
+    "The `insert` method schedules an `Instruction` or `Schedule` at a particular time. Let's use it to give each of our schedules a different instruction.\n",
     "\n",
-    "The insert schedule method overloads the `|` (or) operator for [`Schedule`](https://qiskit.org/documentation/api/qiskit.pulse.Schedule.html#qiskit.pulse.Schedule)s, so we will use this special syntax on schedule `B`. When using this syntactic sugar, the `time` argument is implicitly zero."
+    "The insert schedule method overloads the `|` (or) operator for `Schedule`s, so we will use this special syntax on schedule `B`. When using this syntactic sugar, the `time` argument is implicitly zero."
    ]
   },
   {
@@ -76,9 +76,9 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "### [`shift`](https://qiskit.org/documentation/api/qiskit.pulse.Schedule.html#qiskit.pulse.Schedule.shift) or `<<`\n",
+    "### `shift` or `<<`\n",
     "\n",
-    "Sometimes we need to offset one schedule from `time=0`. For instance, when using `|`, we use [`shift`](https://qiskit.org/documentation/api/qiskit.pulse.Schedule.html#qiskit.pulse.Schedule.shift) to add an instruction at a time besides zero."
+    "Sometimes we need to offset one schedule from `time=0`. For instance, when using `|`, we use `shift` to add an instruction at a time besides zero."
    ]
   },
   {
@@ -109,7 +109,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "Let's see how we can use [`insert`](https://qiskit.org/documentation/api/qiskit.pulse.Schedule.html#qiskit.pulse.Schedule.insert) to compose schedules `A` and `B` together."
+    "Let's see how we can use `insert` to compose schedules `A` and `B` together."
    ]
   },
   {
@@ -140,9 +140,9 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "### [`append`](https://qiskit.org/documentation/api/qiskit.pulse.Schedule.html#qiskit.pulse.Schedule.append) or `+`\n",
+    "### `append` or `+`\n",
     "\n",
-    "The [`append`](https://qiskit.org/documentation/api/qiskit.pulse.Schedule.html#qiskit.pulse.Schedule.append) method is like [`insert`](https://qiskit.org/documentation/api/qiskit.pulse.Schedule.html#qiskit.pulse.Schedule.insert), but the insertion time is determined for us. The [`Instruction`](https://qiskit.org/documentation/api/qiskit.pulse.Instruction.html#qiskit.pulse.Instruction) or [`Schedule`](https://qiskit.org/documentation/api/qiskit.pulse.Schedule.html#qiskit.pulse.Schedule) being added will begin when all the channels common to the two become free. If they contain no common channels, then the [`Schedule`](https://qiskit.org/documentation/api/qiskit.pulse.Schedule.html#qiskit.pulse.Schedule) will be appended at `time=0`. In psuedocode:\n",
+    "The `append` method is like `insert`, but the insertion time is determined for us. The `Instruction` or `Schedule` being added will begin when all the channels common to the two become free. If they contain no common channels, then the `Schedule` will be appended at `time=0`. In psuedocode:\n",
     "\n",
     "```\n",
     "time = 0\n",
@@ -152,7 +152,7 @@
     "\n",
     "The append schedule method overloads the `+` (add) operator for Schedules.\n",
     "\n",
-    "Let's continue with schedule `A` and schedule `B`. Remember that they both have instructions scheduled on the same channel, [`DriveChannel`](https://qiskit.org/documentation/api/qiskit.pulse.DriveChannel.html)`(0)`. Schedule `A` contains positive amplitude pulses, and schedule `B` contains negative amplitude pulses."
+    "Let's continue with schedule `A` and schedule `B`. Remember that they both have instructions scheduled on the same channel, `DriveChannel(0)`. Schedule `A` contains positive amplitude pulses, and schedule `B` contains negative amplitude pulses."
    ]
   },
   {
@@ -184,7 +184,7 @@
    "source": [
     "Let's see what happens when there are no common channels.\n",
     "\n",
-    "Warning: Common channels is not the same as common qubits. Measurements require different channels than gate operations, even on one qubit. If you simply append a measurement to a schedule, you'll likely schedule your measurement at `time=0`, not what you were expecting! Instead, use the shift operation, with [`schedule.duration`](https://qiskit.org/documentation/api/qiskit.pulse.Schedule.html#qiskit.pulse.Schedule.duration) as the time argument."
+    "Warning: Common channels is not the same as common qubits. Measurements require different channels than gate operations, even on one qubit. If you simply append a measurement to a schedule, you'll likely schedule your measurement at `time=0`, not what you were expecting! Instead, use the shift operation, with `schedule.duration` as the time argument."
    ]
   },
   {
@@ -216,7 +216,7 @@
    "source": [
     "This time, the new instruction being appended was added at `time=0`, because it did not have any instructions on `DriveChannel(0)`.\n",
     "\n",
-    "Be wary: [`append`](https://qiskit.org/documentation/api/qiskit.pulse.Schedule.html#qiskit.pulse.Schedule.append) only \"slides\" the appended schedule into the original around channels that are not common between them. The following example demonstrates this point."
+    "Be wary: `append` only \"slides\" the appended schedule into the original around channels that are not common between them. The following example demonstrates this point."
    ]
   },
   {