Revert "[Navigation bar] Allow "right to left" gesture to launch search panel"

This reverts commit b58fe410103fe9c3d061ae97b8956009e9c0d526.

Change-Id: I7095ca66e00c3d8a638e5b9187a20e11f3920969
Merge "Revert "[Navigation bar] Allow "right to left" gesture to launch search panel"" into kitkat