Skip SystemUI check in BluetoothServiceManager if noHome.

When device is configured with config_noHomeScreen, there will be no
SystemUI. Checking SystemUI UID is meaningless.

Bug: 62413935 69965109
Test: On sailfish, logcat shows expected SystemUI UID by default
Change-Id: Iaccc0f10cb82da454077056824c3f6eea6a37c4e