style: disable lint rule for test files

---
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: na
  - task: lint_repl_help
    status: na
  - task: lint_javascript_src
    status: passed
  - 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: na
  - task: lint_typescript_tests
    status: na
  - task: lint_license_headers
    status: passed
---

Author: kgryte

etc/eslint/.eslintrc.tests.js

@@ -126,6 +126,13 @@ eslint.rules[ 'stdlib/jsdoc-private-annotation' ] = 'off';
 */
 eslint.rules[ 'stdlib/jsdoc-doctest' ] = 'off';
 
+/**
+* Do not enforce nested function elevation.
+*
+* @private
+*/
+eslint.rules[ 'stdlib/no-unnecessary-nested-functions' ] = 'off';
+
 /**
 * Allow the use of `undefined`.
 *