Revert "[3/4] core: Add Dialer suggestions and reverse lookup"

To be replaced with Slim's implementation ->

http://gerrit.nameless-rom.org/#/c/942/

This reverts commit 57c171b54360559fd01fcf29331c477028e7c1a4.

Change-Id: Ibf448e236a4184dc675aa5b0349920abca90f974