powerpc: Remove extraneous header from asm-prototypes.h

Commit 03465f89 ("powerpc: Use kprobe blacklist for exception
handlers") removed __kprobes annotation from some of the prototypes,
but left the kprobes header include directive unchanged. Remove it as it
is no longer needed.
Signed-off-by: NNaveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>

arch/powerpc/include/asm/asm-prototypes.h

@@ -13,8 +13,6 @@
  */
 
 #include <linux/threads.h>
-#include <linux/kprobes.h>
-
 #include <uapi/asm/ucontext.h>
 
 /* SMP */