drm/imx: dw_hdmi-imx: remove empty encoder_disable callback
This has not been required since commit 75229eca569f ("drm: Makedrm_encoder_helper_funcs optional").Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Philipp Zabel 5 years ago 23a6502b a67d5088