Revert "kms: Dmabuf Feedback support"

This reverts commit c8bb417d9b.

src/shell/layout/floating/grabs/moving.rs

@@ -6,13 +6,12 @@ use crate::{
         element::{window::CosmicWindowRenderElement, CosmicMapped, CosmicMappedRenderElement},
         focus::target::{KeyboardFocusTarget, PointerFocusTarget},
     },
-    state::SurfaceDmabufFeedback,
     utils::prelude::*,
 };
 
 use smithay::{
     backend::renderer::{
-        element::{AsRenderElements, RenderElement, RenderElementStates},
+        element::{AsRenderElements, RenderElement},
         ImportAll, ImportMem, Renderer,
     },
     desktop::space::SpaceElement,
@@ -92,21 +91,6 @@ impl MoveGrabState {
             .active_window()
             .send_frame(output, time, throttle, primary_scan_out_output)
     }
-
-    pub fn send_dmabuf_feedback(
-        &self,
-        output: &Output,
-        feedback: &SurfaceDmabufFeedback,
-        render_element_states: &RenderElementStates,
-        primary_scan_out_output: impl FnMut(&WlSurface, &SurfaceData) -> Option<Output> + Copy,
-    ) {
-        self.window.active_window().send_dmabuf_feedback(
-            output,
-            feedback,
-            render_element_states,
-            primary_scan_out_output,
-        )
-    }
 }
 
 pub struct MoveSurfaceGrab {