ramips: mt7621: drop kmod-i2c-ralink from ASUS RP-AC56
Drop kmod-i2c-ralink from ASUS RP-AC56 as it was wrongly added. Such
kmod is not supported on mt7621 as i2c is handled by the mediatek driver
and not bay the ralink downstream one.
Signed-off-by: Christian Marangi <[email protected]>