[PATCH] Remove old DRM4.0 code.

Old patch from John Kim to remove old DRM 4.0 code in 2.5.59.

drivers/char/drm/i830_dma.c

@@ -40,12 +40,6 @@
 #include <linux/interrupt.h>	/* For task queue support */
 #include <linux/delay.h>
 
-#ifdef DO_MUNMAP_4_ARGS
-#define DO_MUNMAP(m, a, l)	do_munmap(m, a, l, 1)
-#else
-#define DO_MUNMAP(m, a, l)	do_munmap(m, a, l)
-#endif
-
 #define I830_BUF_FREE		2
 #define I830_BUF_CLIENT		1
 #define I830_BUF_HARDWARE      	0
@@ -230,7 +224,7 @@ static int i830_unmap_buffer(drm_buf_t *buf)
 		return -EINVAL;
 
 	down_write(&current->mm->mmap_sem);
-	retcode = DO_MUNMAP(current->mm,
+	retcode = do_munmap(current->mm,
 			    (unsigned long)buf_priv->virtual,
 			    (size_t) buf->total);
 	up_write(&current->mm->mmap_sem);