Revert "Workaround for sysui studio builds"

This reverts commit cbe99e87.

Reason for revert: Bootlooping with:

```Caused by: java.lang.UnsupportedOperationException: Failed to resolve attribute at index 0: TypedValue{t=0x2/d=0x112002d a=1 r=0x1060276}
04-16 09:17:42.931  7256  7256 E AndroidRuntime: 	at android.content.res.TypedArray.getColor(TypedArray.java:529)
04-16 09:17:42.931  7256  7256 E AndroidRuntime: 	at com.android.keyguard.NumPadAnimator.reloadColors(NumPadAnimator.java:103)```

Change-Id: If23d3b1ce206029b1b45549edbfb9a0a7823e732