fix: remove import/extensions rule

Fixes #23

Seems there's no way to only enforce the rule to exact one extension.

Author: haoqunjiang

examples/create-vue-js/src/components/FooComp.jsx

@@ -1,7 +1,8 @@
 import { defineComponent } from 'vue'
+import { version } from '../../package.json'
 
 export default defineComponent({
   setup () {
-    return () => <div>Foo</div>
+    return () => <div>Foo {version}</div>
   }
 })

packages/eslint-config-standard/.eslintrc.cjs

@@ -15,14 +15,5 @@ module.exports = {
       '.js',
       '.jsx'
     ]
-  },
-  rules: {
-    // Cannot omit `.vue` extensions.
-    // This should be enforced all across the Vue.js ecosystem.
-    'import/extensions': [
-      'error', {
-        vue: 'always'
-      }
-    ]
   }
 }