drivers/graphics: Remove GraphicsAdapter::display_size

It is no longer used.

drivers/graphics/driver-graphics/src/lib.rs

@@ -52,7 +52,6 @@ pub trait GraphicsAdapter: Sized + Debug {
     ///
     /// This must be constant for the lifetime of the graphics adapter.
     fn display_count(&self) -> usize;
-    fn display_size(&self, display_id: usize) -> (u32, u32);
 
     fn create_dumb_buffer(&mut self, width: u32, height: u32) -> Self::Buffer;
     fn map_dumb_buffer(&mut self, buffer: &Self::Buffer) -> *mut u8;

drivers/graphics/ihdgd/src/device/scheme.rs

@@ -73,13 +73,6 @@ impl GraphicsAdapter for Device {
         self.framebuffers.len()
     }
 
-    fn display_size(&self, display_id: usize) -> (u32, u32) {
-        (
-            self.framebuffers[display_id].width as u32,
-            self.framebuffers[display_id].height as u32,
-        )
-    }
-
     fn create_dumb_buffer(&mut self, width: u32, height: u32) -> Self::Buffer {
         DumbFb::new(width as usize, height as usize)
     }

drivers/graphics/vesad/src/scheme.rs

@@ -80,13 +80,6 @@ impl GraphicsAdapter for FbAdapter {
         self.framebuffers.len()
     }
 
-    fn display_size(&self, display_id: usize) -> (u32, u32) {
-        (
-            self.framebuffers[display_id].width as u32,
-            self.framebuffers[display_id].height as u32,
-        )
-    }
-
     fn create_dumb_buffer(&mut self, width: u32, height: u32) -> Self::Buffer {
         GraphicScreen::new(width as usize, height as usize)
     }

drivers/graphics/virtio-gpud/src/scheme.rs

@@ -339,13 +339,6 @@ impl<'a> GraphicsAdapter for VirtGpuAdapter<'a> {
         self.displays.len()
     }
 
-    fn display_size(&self, display_id: usize) -> (u32, u32) {
-        (
-            self.displays[display_id].width,
-            self.displays[display_id].height,
-        )
-    }
-
     fn create_dumb_buffer(&mut self, width: u32, height: u32) -> Self::Buffer {
         futures::executor::block_on(async {
             let bpp = 32;