Move reportNeedlessDisables into shared configuration

Author: aduth

.stylelintrc.json

@@ -1,5 +1,4 @@
 {
   "extends": "@18f/identity-stylelint-config",
-  "ignoreFiles": "**/fixtures/**/*",
-  "reportNeedlessDisables": true
+  "ignoreFiles": "**/fixtures/**/*"
 }

app/javascript/packages/stylelint-config/CHANGELOG.md

@@ -12,6 +12,7 @@
     - [`scss/dollar-variable-empty-line-before`](https://github.com/stylelint-scss/stylelint-scss/blob/master/src/rules/dollar-variable-empty-line-before/README.md)
     - [`scss/double-slash-comment-empty-line-before`](https://github.com/stylelint-scss/stylelint-scss/blob/master/src/rules/double-slash-comment-empty-line-before/README.md)
     - [`color-function-notation`](https://stylelint.io/user-guide/rules/color-function-notation/) (due to [Sass incompatibilities](https://github.com/sass/sass/issues/2831))
+- The ruleset now configures [`"reportNeedlessDisables": true`](https://stylelint.io/user-guide/options/#reportneedlessdisables), which will report inline configuration that disables rules unnecessarily.
 
 ## 4.1.0