Remove __INIT_REFOK and __INITDATA_REFOK

Commit 312b1485fb509c9bc32eda28ad29537896658cb8 made __INIT_REFOK expand
into .section .section ".ref.text", "ax".  Since the assembler doesn't
tolerate stuttering in the source that broke all MIPS builds.

Since with this change Sam downgraded __INIT_REFOK to just a backward
compat thing and there being only a single use in the MIPS arch code the
best solution is to delete both of __INIT_REFOK and __INITDATA_REFOK (which
was equally broken) being unused anyway these can be deleted.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

include/linux/init.h

@@ -124,9 +124,6 @@
 #define __REF            .section       ".ref.text", "ax"
 #define __REFDATA        .section       ".ref.data", "aw"
 #define __REFCONST       .section       ".ref.rodata", "aw"
-/* backward compatibility */
-#define __INIT_REFOK     .section	__REF
-#define __INITDATA_REFOK .section	__REFDATA
 
 #ifndef __ASSEMBLY__
 /*