Floss: Removed unnecessary code related to hold and resume

Remove the unused code added as a workaround for aosp/2760385.

Bug: 328696624
Test: atest bluetooth_test_gd
Tag: #floss
Flag: EXEMPT, no behavior change on Android; Floss-only changes
Change-Id: Ie9c82bf0167a8d16010a6381f9489f287b9af29c