💚 Remove Appveyor cache for fixing build.

Author: kayo5994

UI_dev/qmui_web/appveyor.yml

@@ -33,8 +33,4 @@ test_script:
   - gulp merge
 
 # Don't actually build.
-build: off
-
-cache:
-  - C:\Users\appveyor\AppData\Roaming\npm-cache -> package.json # npm cache
-  - node_modules -> package.json                                # local npm modules
+build: off