ci(umd): remove umd builds

removed umd build as they are not tested and no one really uses them

package.json

@@ -4,19 +4,15 @@
   "description": "redux router that syncs history with store",
   "main": "dist/index.js",
   "scripts": {
-    "build-package": "npm run test && npm run build-all",
-    "build-all": "npm run clean && npm run build-dist && npm run build-umd && npm run build-umd-min",
-    "build-dist": "npm run clean && ./node_modules/.bin/babel src --out-dir dist",
-    "build-dist-watch": "npm run clean && ./node_modules/.bin/babel src --out-dir dist -s -w",
-    "build-examples": "npm run build-dist && (cd examples && npm i && npm start)",
-    "build-umd": "./node_modules/.bin/webpack --bail --config config/webpack/umd.js",
-    "build-umd-min": "./node_modules/.bin/webpack --bail --config config/webpack/umd.min.js",
-    "clean": "./node_modules/.bin/rimraf dist umd",
+    "build": "npm run test && npm run clean && ./node_modules/.bin/babel src --out-dir dist",
+    "build:watch": "npm run clean && ./node_modules/.bin/babel src --out-dir dist -s -w",
+    "build:examples": "npm run build && (cd examples && npm i && npm start)",
+    "clean": "./node_modules/.bin/rimraf dist",
     "commit": "./node_modules/.bin/git-cz",
     "lint": "./node_modules/.bin/eslint --ignore-path=.gitignore --fix ./src",
     "lint-prod": "NODE_ENV='production' npm run lint",
     "version": " ./node_modules/.bin/conventional-changelog -i CHANGELOG.md -s && git add CHANGELOG.md",
-    "prepublish": "npm run build-package",
+    "prepublish": "npm run build",
     "precommit": "npm test",
     "commitmsg": "./node_modules/.bin/validate-commit-msg",
     "test": "npm run lint-prod && ./node_modules/.bin/ava --verbose",