[SPARC64]: Kill __flush_tlb_page() prototype.

This function no longer exists.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/asm-sparc64/tlbflush.h

@@ -22,8 +22,6 @@ extern void flush_tlb_pending(void);
 /* Local cpu only.  */
 extern void __flush_tlb_all(void);
 
-extern void __flush_tlb_page(unsigned long context, unsigned long page, unsigned long r);
-
 extern void __flush_tlb_kernel_range(unsigned long start, unsigned long end);
 
 #ifndef CONFIG_SMP