Remove the macro DISABLE_CURSOR_PLANE

Remove the macro DISABLE_CURSOR_PLANE

Cursor plane already work on Android for all current platform. In current
implementation, the code in this micro are related with the workaround for
'enable_last_plane_', and deleting the cursor plane from overlay plane list.
'enable_last_plane_' has been removed. and the cursor plane still need to
be removed from overlay plane list.

Change-Id: I3b6970ad3ee471b218cd9560c28ac2fc19c1e709
Tracked-On: None
Tests: Compile sucessful for Android.
Signed-off-by: Shaofeng Tang <shaofeng.tang@intel.com>