remove transactional check in requiresBindPerm method

The check that is being removed prevented an already registered
transactional phone account to be changed to a connection service
account.  Doing so would throw an error which lead to some test
failures.

Fixes: 275908077
Test:  existing CTS/unit suite
Change-Id: Iac41e1725afac626170a500b50ed94d3d8e2796a