m68k: Remove empty #ifdef/#ifndef block

Whatever code this was guarding has been removed so remove the guards
too.

Signed-off-by: Chris Packham <judge.packham@gmail.com>

arch/m68k/include/asm/processor.h

@@ -11,8 +11,4 @@ n:
 /* Macros for setting and retrieving special purpose registers */
 #define setvbr(v)	asm volatile("movec %0,%%VBR" : : "r" (v))
 
-#ifndef __ASSEMBLY__
-
-#endif /* ifndef ASSEMBLY*/
-
 #endif /* __ASM_M68K_PROCESSOR_H */