Revert "Join HandlerThread if BLE is not supported"

context.getSystemService() cannot be called until boot phase
PHASE_SYSTEM_SERVICES_READY. Given that L2capNetworkProvider is
initialized inside ConnectivityService's constructor, this will not
work.

This reverts commit 7a5ba567eaca2a2087092d9c2db5e68f63494cfb.

Test: TH
Change-Id: Ife30ce17d62eb408eea6d7625bd7e2f402963b0d
1 file changed