tlb: arch: Remove empty __tlb_remove_tlb_entry() stubs

If __tlb_remove_tlb_entry() is not defined by the architecture then
we provide an empty definition in asm-generic/tlb.h.

Remove the redundant empty definitions for sparc64 and x86.

Suggested-by: Peter Zijlstra <[e-mail]>
Signed-off-by: Will Deacon <[e-mail]>
Signed-off-by: Peter Zijlstra (Intel) <[e-mail]>
Reviewed-by: Yu Zhao <[e-mail]>
Acked-by: Peter Zijlstra (Intel) <[e-mail]>
Acked-by: Linus Torvalds <[e-mail]>
Link: https://lkml.kernel.org/r/[e-mail]

arch/sparc/include/asm/tlb_64.h

···
 
 #define tlb_start_vma(tlb, vma) do { } while (0)
 #define tlb_end_vma(tlb, vma)	do { } while (0)
-#define __tlb_remove_tlb_entry(tlb, ptep, address) do { } while (0)
 #define tlb_flush(tlb)	flush_tlb_pending()
 
 /*

arch/x86/include/asm/tlb.h

···
 
 #define tlb_start_vma(tlb, vma) do { } while (0)
 #define tlb_end_vma(tlb, vma) do { } while (0)
-#define __tlb_remove_tlb_entry(tlb, ptep, address) do { } while (0)
 
 #define tlb_flush tlb_flush
 static inline void tlb_flush(struct mmu_gather *tlb);