rm unused spec/.eslintrc.js

This file hasn't done anything since the upgrade to eslint 9.

spec/.eslintrc.js

@@ -1,23 +0,0 @@
-module.exports = {
-  ignorePatterns: ['support/ci.js', 'support/jasmine-browser.js'],
-  rules: {
-    // Relax rules for now to allow for the quirks of the test suite
-    // TODO: We should probably remove these & fix the resulting errors
-    quotes: 'off',
-    semi: 'off',
-    'key-spacing': 'off',
-    'space-before-blocks': 'off',
-    'no-trailing-spaces': 'off',
-    'block-spacing': 'off',
-
-    // Additionally, check for unused fn args
-    // TODO: consider doing this in src files as well as specs
-    'no-unused-vars': ['error', { args: 'after-used' }],
-
-    // Since linting is done at the end of the process and doesn't stop us
-    // from running tests, it makes sense to fail if debugger statements
-    // or console references are present.
-    'no-debugger': 'error',
-    'no-console': 'error'
-  }
-};