fbdev: Remove FB_DEFAULT_SYS_OPS

Remove the initializer macro FB_DEFAULT_SYS_OPS and its helper macro
__FB_DEFAULT_SYS_OPS_MMAP. There are no users.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Acked-by: Maxime Ripard <mripard@kernel.org>
Cc: Helge Deller <deller@gmx.de> (maintainer:FRAMEBUFFER LAYER)
Link: https://patchwork.freedesktop.org/patch/msgid/20230707083422.18691-12-tzimmermann@suse.de

Author: tdz

include/linux/fb.h

@@ -583,14 +583,6 @@ extern ssize_t fb_sys_write(struct fb_info *info, const char __user *buf,
 	.fb_copyarea	= sys_copyarea, \
 	.fb_imageblit	= sys_imageblit
 
-#define __FB_DEFAULT_SYS_OPS_MMAP \
-	.fb_mmap	= NULL /* default implementation */
-
-#define FB_DEFAULT_SYS_OPS \
-	__FB_DEFAULT_SYS_OPS_RDWR, \
-	__FB_DEFAULT_SYS_OPS_DRAW, \
-	__FB_DEFAULT_SYS_OPS_MMAP
-
 /*
  * Helpers for framebuffers in DMA-able memory
  */