Fixes gcc '-Wunused-but-set-variable' warning:
drivers/gpu/drm/arm/display/komeda/komeda_plane.c: In function komeda_plane_atomic_check:
drivers/gpu/drm/arm/display/komeda/komeda_plane.c:49:22: warning: variable kcrtc set but not used [-Wunused-but-set-variable]
It is never used since introduction in
commit 
9e5603094176 ("drm/komeda: Add komeda_plane/plane_helper_funcs")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: James Qian Wang (Arm Technology China) <james.qian.wang@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
        struct komeda_plane_state *kplane_st = to_kplane_st(state);
        struct komeda_layer *layer = kplane->layer;
        struct drm_crtc_state *crtc_st;
-       struct komeda_crtc *kcrtc;
        struct komeda_crtc_state *kcrtc_st;
        struct komeda_data_flow_cfg dflow;
        int err;
        if (!crtc_st->active)
                return 0;
 
-       kcrtc = to_kcrtc(state->crtc);
        kcrtc_st = to_kcrtc_st(crtc_st);
 
        err = komeda_plane_init_data_flow(state, &dflow);