Revert "Dialer: DirectCall support"

This reverts commit d0b02358c2dfb15496a891c62dd8c7a7c2ae6544.
[3/4] Dialer: Smart Phone Call

Put on your ear, and this will automatically call current number in message or dialer

Change-Id: I0a8832e503f0acb7bf55a5a48bf7bd8e8d5da1bf

Patchset: 2
https://gerrit.omnirom.org/#/c/6316/