tidy up stylelint configuration file

apps/app/.stylelintrc.json

@@ -1,20 +1,7 @@
 {
-  "extends": [
-    "stylelint-config-recess-order"
-  ],
-  "customSyntax": "postcss-scss",
+  "extends": "../../.stylelintrc.json",
   "ignoreFiles": [
     "src/styles/prebuilt/*.css",
     "src/linter-checker/test.scss"
-  ],
-  "rules": {
-    "indentation": 2,
-    "string-quotes": "single",
-    "rule-empty-line-before": [ "always-multi-line", {
-      "except": ["after-single-line-comment", "first-nested"],
-      "ignore": ["after-comment", "inside-block"]
-    } ],
-    "selector-combinator-space-before": "always",
-    "selector-combinator-space-after": "always"
-  }
+  ]
 }