microblaze: remove unused TIF_KERNEL_TRACE

TIF_KERNEL_TRACE is not used anywhere.
Signed-off-by: Michal Simek <monstr@monstr.eu>

arch/microblaze/include/asm/thread_info.h

@@ -127,9 +127,6 @@ static inline struct thread_info *current_thread_info(void)
 #define TIF_SECCOMP		10      /* secure computing */
 #define TIF_FREEZE		14	/* Freezing for suspend */
 
-/* FIXME change in entry.S */
-#define TIF_KERNEL_TRACE	8	/* kernel trace active */
-
 /* true if poll_idle() is polling TIF_NEED_RESCHED */
 #define TIF_POLLING_NRFLAG	16
 
@@ -143,7 +140,6 @@ static inline struct thread_info *current_thread_info(void)
 #define _TIF_FREEZE		(1 << TIF_FREEZE)
 #define _TIF_SYSCALL_AUDIT	(1 << TIF_SYSCALL_AUDIT)
 #define _TIF_SECCOMP		(1 << TIF_SECCOMP)
-#define _TIF_KERNEL_TRACE	(1 << TIF_KERNEL_TRACE)
 
 /* work to do in syscall trace */
 #define _TIF_WORK_SYSCALL_MASK  (_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP | \