Disable tests for TSTS issue

On TSTS devices for Q the MultiSimPreparer for VTS which is supposed to
enable the max-supported modems before the test does not work, as we
don't have an API to return the true max-supported modems until after Q.
We are disabling these tests because there is no workaround on Q.

Bug: 145710242
Test: vts
Change-Id: I4aaea8b3e783380965c4c77c0562b07bc197eae5