fix: remove incorrect gypfile and directory fields from signrank package.json

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
  - task: lint_filenames
    status: passed
  - task: lint_editorconfig
    status: passed
  - task: lint_markdown
    status: na
  - task: lint_package_json
    status: passed
  - task: lint_repl_help
    status: na
  - task: lint_javascript_src
    status: na
  - task: lint_javascript_cli
    status: na
  - task: lint_javascript_examples
    status: na
  - task: lint_javascript_tests
    status: na
  - task: lint_javascript_benchmarks
    status: na
  - task: lint_python
    status: na
  - task: lint_r
    status: na
  - task: lint_c_src
    status: na
  - task: lint_c_examples
    status: na
  - task: lint_c_benchmarks
    status: na
  - task: lint_c_tests_fixtures
    status: na
  - task: lint_shell
    status: na
  - task: lint_typescript_declarations
    status: passed
  - task: lint_typescript_tests
    status: na
  - task: lint_license_headers
    status: passed
---

Author: nirmaljb

lib/node_modules/@stdlib/stats/base/dists/signrank/quantile/package.json

@@ -14,16 +14,12 @@
     }
   ],
   "main": "./lib",
-  "gypfile": true,
   "directories": {
-    "benchmark": "./benchmark",
     "doc": "./docs",
     "example": "./examples",
-    "include": "./include",
     "lib": "./lib",
-    "src": "./src",
     "test": "./test"
-  },
+},
   "types": "./docs/types",
   "scripts": {},
   "homepage": "https://github.com/stdlib-js/stdlib",