Remove no-unexpected-multiline rule (facebook#8039)

Author: iansu

CHANGELOG.md

@@ -48,14 +48,9 @@ We've removed this rule as it is not compatible with Prettier. If you rely on th
 ```json
 {
   "extends": "react-app",
-  "overrides": [
-    {
-      "files": ["**/*.{js,ts?(x)}"],
-      "rules": {
-        "no-unexpected-multiline": "warn"
-      }
-    }
-  ]
+  "rules": {
+    "no-unexpected-multiline": "warn"
+  }
 }
 ```
 

packages/eslint-config-react-app/index.js

@@ -188,7 +188,6 @@ module.exports = {
     'no-throw-literal': 'warn',
     'no-undef': 'error',
     'no-restricted-globals': ['error'].concat(restrictedGlobals),
-    'no-unexpected-multiline': 'warn',
     'no-unreachable': 'warn',
     'no-unused-expressions': [
       'error',