[core] Remove outdated Babel plugins (#42140)

Author: ZeeshanTamboli

babel.config.js

@@ -67,12 +67,6 @@ module.exports = function getBabelConfig(api) {
       },
     ],
     'babel-plugin-optimize-clsx',
-    // Need the following 3 proposals for all targets in .browserslistrc.
-    // With our usage the transpiled loose mode is equivalent to spec mode.
-    ['@babel/plugin-proposal-class-properties', { loose: true }],
-    ['@babel/plugin-proposal-private-methods', { loose: true }],
-    ['@babel/plugin-proposal-private-property-in-object', { loose: true }],
-    ['@babel/plugin-proposal-object-rest-spread', { loose: true }],
     [
       '@babel/plugin-transform-runtime',
       {

package.json

@@ -91,10 +91,6 @@
     "@babel/cli": "^7.24.5",
     "@babel/core": "^7.24.5",
     "@babel/node": "^7.23.9",
-    "@babel/plugin-proposal-class-properties": "^7.18.6",
-    "@babel/plugin-proposal-object-rest-spread": "^7.20.7",
-    "@babel/plugin-proposal-private-methods": "^7.18.6",
-    "@babel/plugin-proposal-private-property-in-object": "^7.21.11",
     "@babel/plugin-transform-react-constant-elements": "^7.24.1",
     "@babel/plugin-transform-runtime": "^7.24.3",
     "@babel/preset-env": "^7.24.5",
@@ -192,12 +188,6 @@
   "resolutions": {
     "@babel/core": "^7.24.5",
     "@babel/code-frame": "^7.24.2",
-    "@babel/plugin-proposal-class-properties": "^7.18.6",
-    "@babel/plugin-proposal-object-rest-spread": "^7.20.7",
-    "@babel/plugin-proposal-nullish-coalescing-operator": "^7.18.6",
-    "@babel/plugin-proposal-numeric-separator": "^7.18.6",
-    "@babel/plugin-proposal-optional-chaining": "^7.21.0",
-    "@babel/plugin-transform-destructuring": "npm:@minh.nguyen/plugin-transform-destructuring@^7.5.2",
     "@babel/plugin-transform-runtime": "^7.24.3",
     "@babel/preset-env": "^7.24.5",
     "@babel/preset-react": "^7.24.1",