stylelint: Drop checks which don't exist in version 16 any more

.stylelintrc.json

@@ -4,11 +4,7 @@
     "stylelint-use-logical-spec"
   ],
   "rules": {
-    "declaration-colon-newline-after": null,
-    "selector-list-comma-newline-after": null,
-
     "at-rule-empty-line-before": null,
-    "declaration-colon-space-before": null,
     "declaration-empty-line-before": null,
     "custom-property-empty-line-before": null,
     "comment-empty-line-before": null,
@@ -23,7 +19,6 @@
     "font-family-no-duplicate-names": null,
     "function-url-quotes": null,
     "keyframes-name-pattern": null,
-    "max-line-length": null,
     "media-feature-range-notation": "prefix",
     "no-descending-specificity": null,
     "no-duplicate-selectors": null,