csky/tlb: Remove tlb_flush() define

The previous patch removed the tlb_flush_end() implementation which
used tlb_flush_range(). This means:

- csky did double invalidates, a range invalidate per vma and a full
invalidate at the end

- csky actually has range invalidates and as such the generic
tlb_flush implementation is more efficient for it.

Signed-off-by: Peter Zijlstra (Intel) <[e-mail]>
Acked-by: Will Deacon <[e-mail]>
Tested-by: Guo Ren <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

arch/csky/include/asm/tlb.h

···
 #define __ASM_CSKY_TLB_H
 
 #include <asm/cacheflush.h>
-#define tlb_flush(tlb) flush_tlb_mm((tlb)->mm)
-
 #include <asm-generic/tlb.h>
 
 #endif /* __ASM_CSKY_TLB_H */