removed webpack typings

package.json

@@ -7,7 +7,6 @@
     "@types/electron-debug": "^2.1.0",
     "@types/js-yaml": "^3.12.3",
     "@types/node": "12.7.12",
-    "@types/webpack-env": "1.15.0",
     "@typescript-eslint/eslint-plugin": "^2.26.0",
     "@typescript-eslint/parser": "^2.29.0",
     "apply-loader": "2.0.0",

yarn.lock

@@ -246,11 +246,6 @@
   resolved "https://registry.yarnpkg.com/@types/node/-/node-12.11.7.tgz#57682a9771a3f7b09c2497f28129a0462966524a"
   integrity sha512-JNbGaHFCLwgHn/iCckiGSOZ1XYHsKFwREtzPwSGCVld1SGhOlmZw2D4ZI94HQCrBHbADzW9m4LER/8olJTRGHA==
 
-"@types/webpack-env@1.15.0":
-  version "1.15.0"
-  resolved "https://registry.yarnpkg.com/@types/webpack-env/-/webpack-env-1.15.0.tgz#bd9956d5044b1fb43e869a9ba9148862ff98d9fd"
-  integrity sha512-TfcyNecCz8Z9/s90gBOBniyzZrTru8u2Vp0VZODq4KEBaQu8bfXvu7o/KUOecMpzjbFPUA7aqgSq628Iue5BQg==
-
 "@types/yargs-parser@*":
   version "15.0.0"
   resolved "https://registry.yarnpkg.com/@types/yargs-parser/-/yargs-parser-15.0.0.tgz#cb3f9f741869e20cce330ffbeb9271590483882d"