Remove tzdata from core.mk, now we have explicit dependencies.
Remove tzdata from core.mk, now we have explicit dependencies.

Bug: 7012465
Change-Id: I4c8aefdea49d9a21264580828146a4ae01dd1c95

xorware/android_build,xorware/android_build,xorware/android_build,xorware/android_build,xorware/android_build