Remove SpecialSearchNoResults and call SpecialSearchResults always

The former hook is only used by one extension which uses the
same code path for both hooks meaning no fix is necessary. Makes
it possible for extensions to actually provide results when none
were found.

Change-Id: Ia4d56b2a1a7531529dbde8a011a33a4482c04932
Merge "Remove SpecialSearchNoResults and call SpecialSearchResults always"