Fix profile disable flakiness

The following
```
verify(adapterService).onProfileServiceStateChanged(profile)
assertThat(profile).isNull();
```
can fail because the profile is set to null after the call to
onProfileServiceStateChanged

By adding a verify on `removeProfile` I ensure the `profile.stop()` has
been called

Bug: 257183155
Test: atest BluetoothInstrumentationTests
Change-Id: I5b80b0f08435c911a41e63e9a40516ba8469c9eb