Issue #2866805 by Mukeysh, joelpittet, harsha012: Update stylelint rule...

Issue #2866805 by Mukeysh, joelpittet, harsha012: Update stylelint rule declaration-block-no-redundant-longhand-properties to be consistent with Drupal's CSS standards

core/.stylelintrc.json

@@ -8,7 +8,6 @@
     "color-hex-length": null,
     "comment-empty-line-before": null,
     "declaration-block-no-duplicate-properties": null,
-    "declaration-block-no-redundant-longhand-properties": null,
     "declaration-block-no-shorthand-property-overrides": null,
     "function-comma-space-after": null,
     "function-linear-gradient-no-nonstandard-direction": null,