HID: lenovo: Don't set EV_REP to avoid repeating mice buttons

On the USB keyboard, the VENDOR hotkeys share the same device as the
mouse. Setting EV_REP also affects mouse buttons, so leave it off.

The bluetooth keyboard still has autorepeating mouse buttons, as it
only has one device and is set by the KEYBOARD pages.

Signed-off-by: Jamie Lentin <jm@lentin.co.uk>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>