media: amphion: remove unused struct 'vpu_malone_frame_buffer'

'vpu_malone_frame_buffer' has been unused since the original
commit 145e9363 ("media: amphion: implement malone decoder rpc
interface").

Remove it.
Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

drivers/media/platform/amphion/vpu_malone.c

@@ -207,11 +207,6 @@ struct vpu_malone_dbglog_desc {
 	u32 reserved;
 };
 
-struct vpu_malone_frame_buffer {
-	u32 addr;
-	u32 size;
-};
-
 struct vpu_malone_udata {
 	u32 base;
 	u32 total_size;