ext4: remove unused definition for MAX_32_NUM

MAX_32_NUM isn't used in ext4
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

fs/ext4/ioctl.c

@@ -19,8 +19,6 @@
 #include "ext4_jbd2.h"
 #include "ext4.h"
 
-#define MAX_32_NUM ((((unsigned long long) 1) << 32) - 1)
-
 /**
  * Swap memory between @a and @b for @len bytes.
  *