Remove PollLoop from host build.
Remove PollLoop from host build.

We can't build (and we don't need) PollLoop in the SDK on all platforms.

Change-Id: I3b0f327bbb8bc58b9b8630b0161cf360403fea68

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