g2: Remove obsolete liblights module

No longer needs custom liblights for basic LED functioning

Will eventually need a rewrite if the LED on the back of the device
is allowed to function, but at that time we can re-add the module.

Change-Id: If6035e1dd5b8220f1e68f423cdb09dfb345f3361
Signed-off-by: Rohan Mathur <rohanmathur34@gmail.com>