Don't store a static instance of UserManager
Don't store a static instance of UserManager

Otherwise the context within it can't be GCed.
It's better to leave the caching to the ContextImpl.

Bug: 25308506
Change-Id: I9be3ba5b1bb6cdc88b77520b2fbd72d9b72ef30d

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base