Revert "Ignore mts failing test"

This reverts commit ad1b4ba7.

Reason for revert: b/389224954

Since the recent change on how the flag are access, this test is passing again.
remove ignore

Bug: 389224954
Change-Id: I96a368fe2e2b7beae64f16f0e43657d32c31c3a0
Test: atest BluetoothInstrumentationTests
Test: validated with abtd run http://android-build/abtd/run/L17100030009361405
Flag: TEST_ONLY