Revert "ANDROID: vendor_hooks: Add vendor hooks for key combination"

This reverts commit ab2d60d9.

Caused KMI break (not detected by TH until after it was merged)

Signed-off-by: Todd Kjos <tkjos@google.com>
Change-Id: If1b10072bf3758fdbb6e0e4e2cdacbcf010ab44d