keep prop-types in production minified UMD build

when the time is right, one need only
change the BABEL_ENV for build:umd:min back to "rollup-production"

.babelrc

@@ -43,11 +43,6 @@
         "external-helpers",
         ["transform-react-remove-prop-types", { "removeImport": true }]
       ]
-    },
-    "production": {
-      "plugins": [
-        ["transform-react-remove-prop-types", { "removeImport": true }]
-      ]
     }
   }
 }

package.json

@@ -30,7 +30,7 @@
     "build:commonjs": "cross-env BABEL_ENV=commonjs babel src --out-dir lib",
     "build:es": "cross-env BABEL_ENV=es babel src --out-dir es",
     "build:umd": "cross-env BABEL_ENV=rollup NODE_ENV=development rollup -c -o dist/react-redux.js",
-    "build:umd:min": "cross-env BABEL_ENV=rollup-production NODE_ENV=production rollup -c -o dist/react-redux.min.js",
+    "build:umd:min": "cross-env BABEL_ENV=rollup NODE_ENV=production rollup -c -o dist/react-redux.min.js",
     "build": "npm run build:commonjs && npm run build:es && npm run build:umd && npm run build:umd:min",
     "clean": "rimraf lib dist es coverage",
     "lint": "eslint src test/utils test/components",
@@ -46,6 +46,7 @@
     "hoist-non-react-statics": "^2.5.5",
     "invariant": "^2.2.4",
     "loose-envify": "^1.1.0",
+    "prop-types": "^15.6.2",
     "react-is": "^16.4.2",
     "shallow-equals": "^1.0.0"
   },
@@ -90,7 +91,6 @@
     "jest": "^23.4.1",
     "jest-dom": "^1.12.0",
     "npm-run": "^5.0.1",
-    "prop-types": "^15.6.2",
     "react": "^16.4.2",
     "react-dom": "^16.4.2",
     "react-testing-library": "^5.0.0",