drm/mediatek: gamma: drop driver owner initialization

Core in platform_driver_register() already sets the .owner, so driver
does not need to.  Whatever is set here will be anyway overwritten by
main driver calling platform_driver_register().

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20240330-b4-module-owner-drm-mediatek-v1-4-fd5c4b8d633e@linaro.org/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>

Author: krzk

drivers/gpu/drm/mediatek/mtk_disp_gamma.c

@@ -334,7 +334,6 @@ struct platform_driver mtk_disp_gamma_driver = {
 	.remove_new	= mtk_disp_gamma_remove,
 	.driver		= {
 		.name	= "mediatek-disp-gamma",
-		.owner	= THIS_MODULE,
 		.of_match_table = mtk_disp_gamma_driver_dt_match,
 	},
 };