Merge pull request #898 from nonhermitian/fix_terra_adv_1

fix terra adv 1

Author: nonhermitian

tutorials/terra/advanced/1_advanced_circuits.ipynb

@@ -145,7 +145,6 @@
     "\n",
     "# Convert to a gate and stick it into an arbitrary place in the bigger circuit\n",
     "sub_inst = sub_circ.to_instruction()\n",
-    "sub_inst.label = "sub_circ\n",
     "\n",
     "q = QuantumRegister(3, 'q')\n",
     "circ = QuantumCircuit(q)\n",