remove resolve-url-loader

Depending on sourcemaps makes many inconsistencies for builds! Same behaviour is supported by vue-loader

lib/builder/webpack/style-loader.js

@@ -8,7 +8,7 @@ export default function styleLoader (ext, loaders = [], isVueLoader = false) {
       return {
         loader,
         options: {
-          sourceMap: true // Source map is REQUIRED for urlLoader
+          sourceMap: this.options.build.cssSourceMap
         }
       }
     }
@@ -52,18 +52,12 @@ export default function styleLoader (ext, loaders = [], isVueLoader = false) {
     }
   }
 
-  // https://github.com/bholloway/resolve-url-loader
-  const urlLoader = {
-    loader: 'resolve-url-loader'
-  }
-
   if (this.options.build.extractCSS && !this.options.dev) {
     return ExtractTextPlugin.extract({
       fallback: vueStyleLoader,
       use: [
         cssLoader,
         postcssLoader,
-        urlLoader,
         ...loaders
       ].filter(l => l)
     })
@@ -73,7 +67,6 @@ export default function styleLoader (ext, loaders = [], isVueLoader = false) {
     vueStyleLoader,
     cssLoader,
     postcssLoader,
-    urlLoader,
     ...loaders
   ].filter(l => l)
 }

package.json

@@ -105,7 +105,6 @@
     "postcss-url": "^7.1.2",
     "pretty-error": "^2.1.1",
     "progress-bar-webpack-plugin": "^1.10.0",
-    "resolve-url-loader": "^2.1.0",
     "serialize-javascript": "^1.4.0",
     "serve-static": "^1.12.4",
     "server-destroy": "^1.0.1",