DefaultKIDSPatchInstaller: Drop "Incoming Mail Group:" from list

As it turns out "Incoming Mail Group:" is just a place holder, the real
question is "Enter the Coordinator for Mail Group". The original code works
only if there is just one "Enter the Coordinator for Mail Group" question to
answer.

OSEHRA-Id: http://issues.osehra.org/browse/VAF-92
Change-Id: I300d738950fed80b83fed65d79087928b9e74849
Merge "DefaultKIDSPatchInstaller: Drop "Incoming Mail Group:" from list"