staging: sm750fb: Remove Unused macro

The macro PEEK32 is used nowhere in the file. Hence,removed.
Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/sm750fb/sm750_cursor.c

@@ -19,8 +19,6 @@
 #include "sm750_cursor.h"
 
 
-#define PEEK32(addr) \
-readl(cursor->mmio + (addr))
 
 #define POKE32(addr, data) \
 writel((data), cursor->mmio + (addr))