Remove compact photo picker code

Removed code/classes that related to selecting one of the raw
contact photos to be the photo for the aggregate contact.
After this the only way to set the aggregate contact photo is
to change the photo of one of the raw contacts.

Test:
Tested the following editor scenarios:
  1) new contact
  2) edit other contact
  3) edit writable raw contact
  4) edit read-only raw contact (joins a new writable raw contact to it)
  5) edit aggregate w/ 1 writable and 1 read-only raw contact
  6) edit aggregate w/ 2 writable raw contacts
  7) edit local me raw contact
  8) edit local me raw contact joined with a read-only raw contact
  9) editing photo of a raw contact that is part of an aggregate
     updates the aggregate photo
  10) each raw contact had the correct photo when
      we switched to it.
  11) changing a photo for multiple raw contacts within
      an aggregate and saving changed all of them. (the last one
      changed was marked as primary)

Bug: 31088704
Change-Id: Ia704ae5c6cf81836abe6e48c83922ca1dd036d32