drm/pl111: Remove unused including <linux/version.h>

Remove including <linux/version.h> that don't need it.
Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210727052107.659-1-caihuoqing@baidu.com

drivers/gpu/drm/pl111/pl111_display.c

@@ -11,7 +11,6 @@
 
 #include <linux/clk.h>
 #include <linux/delay.h>
-#include <linux/version.h>
 #include <linux/dma-buf.h>
 #include <linux/of_graph.h>
 

drivers/gpu/drm/pl111/pl111_drv.c

@@ -44,7 +44,6 @@
 #include <linux/of_reserved_mem.h>
 #include <linux/shmem_fs.h>
 #include <linux/slab.h>
-#include <linux/version.h>
 
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_bridge.h>