Remove windows sdk in engines (#456)
Remove windows sdk in engines (#456)

fix the following error 

```
BUILD FAILED
* What went wrong:
Execution failed for task ':app:transformDexArchiveWithExternalLibsDexMergerForDebug'.

Command failed with exit code 1 Error output:
Note: SystemCookieManager.java uses or overrides a deprecated API.
```
that occurs in ionic 3.9.2 when building in android
katzer/cordova-plugin-background-mode,katzer/cordova-plugin-background-mode