[MIPS] Remove CONFIG_BUILD_ELF64.
    
This option is no longer usable with supported compilers.  It will be
replaced by usage of -msym32 in a separate patch.
    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/include/asm-mips/mmu_context.h b/include/asm-mips/mmu_context.h
index 19cdf76..61cf225 100644
--- a/include/asm-mips/mmu_context.h
+++ b/include/asm-mips/mmu_context.h
@@ -33,12 +33,7 @@
 	write_c0_context((unsigned long) smp_processor_id() << 25);	\
 	TLBMISS_HANDLER_SETUP_PGD(swapper_pg_dir)
 #endif
-#if defined(CONFIG_64BIT) && !defined(CONFIG_BUILD_ELF64)
-#define TLBMISS_HANDLER_SETUP()						\
-	write_c0_context((unsigned long) &pgd_current[smp_processor_id()] << 23); \
-	TLBMISS_HANDLER_SETUP_PGD(swapper_pg_dir)
-#endif
-#if defined(CONFIG_64BIT) && defined(CONFIG_BUILD_ELF64)
+#ifdef CONFIG_64BIT
 #define TLBMISS_HANDLER_SETUP()						\
 	write_c0_context((unsigned long) smp_processor_id() << 26);	\
 	TLBMISS_HANDLER_SETUP_PGD(swapper_pg_dir)