Remove @Ignore from working test

This test was disabled previous due to a bug, but that bug has been
fixed. The @Ignore was not removed. This change removes the annotation
so the test can run again

Tag: #stability
Bug: 260948676
Test: atest BluetoothInstrumentationTests
Change-Id: I3ca09ba41681b374c230c3ef8ae6e5d6206a2fc8