drm/radeon/radeon_fb: Remove unused function

Remove the function radeon_fbdev_total_size() that is not used anywhere.

This was partially found by using a static code analysis program called cppcheck.
Signed-off-by: NRickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/radeon/radeon_fb.c

@@ -419,16 +419,6 @@ void radeon_fbdev_set_suspend(struct radeon_device *rdev, int state)
 	fb_set_suspend(rdev->mode_info.rfbdev->helper.fbdev, state);
 }
 
-int radeon_fbdev_total_size(struct radeon_device *rdev)
-{
-	struct radeon_bo *robj;
-	int size = 0;
-
-	robj = gem_to_radeon_bo(rdev->mode_info.rfbdev->rfb.obj);
-	size += radeon_bo_size(robj);
-	return size;
-}
-
 bool radeon_fbdev_robj_is_fb(struct radeon_device *rdev, struct radeon_bo *robj)
 {
 	if (robj == gem_to_radeon_bo(rdev->mode_info.rfbdev->rfb.obj))

drivers/gpu/drm/radeon/radeon_mode.h

@@ -923,7 +923,6 @@ void dce8_program_fmt(struct drm_encoder *encoder);
 int radeon_fbdev_init(struct radeon_device *rdev);
 void radeon_fbdev_fini(struct radeon_device *rdev);
 void radeon_fbdev_set_suspend(struct radeon_device *rdev, int state);
-int radeon_fbdev_total_size(struct radeon_device *rdev);
 bool radeon_fbdev_robj_is_fb(struct radeon_device *rdev, struct radeon_bo *robj);
 
 void radeon_fb_output_poll_changed(struct radeon_device *rdev);