Removed unused rollup plugins.

Author: StringEpsilon

package-lock.json

@@ -36,7 +36,6 @@
 		"@babel/core": "^7.4.3",
 		"@babel/plugin-proposal-class-properties": "^7.4.0",
 		"@babel/preset-env": "^7.4.3",
-		"@babel/preset-flow": "^7.0.0",
 		"@babel/preset-react": "^7.0.0",
 		"@babel/preset-typescript": "^7.3.3",
 		"@types/enzyme": "^3.9.1",
@@ -53,8 +52,6 @@
 		"react": "^16.2.0",
 		"react-dom": "^16.2.0",
 		"rollup": "^1.9.0",
-		"rollup-plugin-babel": "^4.3.2",
-		"rollup-plugin-commonjs": "^9.3.4",
 		"rollup-plugin-node-resolve": "^4.1.0",
 		"rollup-plugin-uglify": "^6.0.2"
 	},