[IA64] remove asm-ia64/bitops.h self-inclusion

asm-ia64/bitops.h includes itself.  The #ifndef _ASM_IA64_BITOPS_H
prevents this from being an issue, but it should still be removed.
Signed-off-by: Jon Mason <jdmason@us.ibm.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

include/asm-ia64/bitops.h

@@ -11,7 +11,6 @@
 
 #include <linux/compiler.h>
 #include <linux/types.h>
-#include <asm/bitops.h>
 #include <asm/intrinsics.h>
 
 /**