Remove broken contacts test app intents

* Remove the never implemented join AllIntentsActivity list item
* Remove all dialer (dial, call log, and call details)
  AllIntentsActivity list items (they don't work on tablets).
* Remove PinnedHeaderUseCaseActivity from the manifest. The
  class it was testing, PinnedHeaderListDemoActivity, was
  removed in ag/755533
* Change the name of the test app to "Contacts Test" instead
  of "Contacts Intents"
* Don't create a separate launcher for QuickContactsTestActivity,
  just add it the AllIntentsActivity list

Bug 22407284

Change-Id: I54ec0750ec23dc441e40d77352c63a1d774a9477