perf(babel): BREAKING CHANGE\nSwitch to babel 7, remove useless deps

Author: Dimitri Kopriwa

package.json

@@ -158,14 +158,9 @@
     "@babel/plugin-external-helpers": "^7.0.0",
     "@babel/plugin-proposal-class-properties": "^7.0.0",
     "@babel/plugin-proposal-decorators": "^7.0.0",
-    "@babel/plugin-proposal-export-namespace-from": "^7.0.0",
-    "@babel/plugin-proposal-function-sent": "^7.0.0",
     "@babel/plugin-proposal-json-strings": "^7.0.0",
-    "@babel/plugin-proposal-numeric-separator": "^7.0.0",
     "@babel/plugin-proposal-object-rest-spread": "^7.0.0",
-    "@babel/plugin-proposal-throw-expressions": "^7.0.0",
     "@babel/plugin-syntax-dynamic-import": "^7.0.0",
-    "@babel/plugin-syntax-import-meta": "^7.0.0",
     "@babel/plugin-transform-async-to-generator": "^7.0.0",
     "@babel/plugin-transform-modules-commonjs": "^7.0.0",
     "@babel/plugin-transform-react-constant-elements": "^7.0.0",