Remove wear hidden api exceptions

We initially allowed wear to call some hidden apis.
The bug tracking the usage has been fixed.
We should be able to safely remove the workaround

Test: Build
Bug: 218975993
Ignore-AOSP-First: No wear on AOSP (this specific will be cherry-pick later)
Flag: Exempt, build change
Change-Id: Ib03953fbb8369e4236cbcd3e4c5729db7f719313