FrameworkBluetoothTests: Remove certificate

The certificate was not needed as we don't share
the uid of Bluetooth

Test: TreeHugger
Bug: 265213364
Ignore-AOSP-First: Will cherry-pick to AOSP
Change-Id: I7399254ad435b171de4539189690e98796a27ee1
Merged-In: I7399254ad435b171de4539189690e98796a27ee1
(cherry picked from commit d95b5e1e)