Remove linter-specific files.

Remove configuration files for linters.

.prettierignore

-package.json
-package-lock.json
-_site
-assets/css/just-the-docs-default.scss
-assets/css/just-the-docs-light.scss
-assets/css/just-the-docs-dark.scss
-assets/js/vendor/lunr.min.js
-assets/js/search-data.json
-assets/js/just-the-docs.js
-*.md

.prettierrc

-{
-  "endOfLine": "lf",
-  "semi": false,
-  "singleQuote": false,
-  "tabWidth": 2,
-  "trailingComma": "es5"
-}
\ No newline at end of file

.stylelintrc.json

-{
-  "ignoreFiles": [
-    "assets/css/just-the-docs-default.scss",
-    "assets/css/just-the-docs-light.scss",
-    "assets/css/just-the-docs-dark.scss",
-    "_sass/vendor/**/*.scss"
-  ],
-  "extends": [
-    "stylelint-config-standard-scss",
-    "stylelint-config-prettier-scss"
-  ],
-  "plugins": ["stylelint-prettier"],
-  "rules": {
-    "prettier/prettier": true,
-    "alpha-value-notation": null,
-    "color-function-notation": null,
-    "no-descending-specificity": null,
-    "scss/no-global-function-names": null
-  }
-}