Revert "[MIPS] Support FR=0 emulation on FR=1 64-bit FP registers"

This reverts commit d02ec08427b006e80191ce60690ce48a788fb832.

Bug: http://b/22045439
Change-Id: Iaf10ff1e2948083cce0098f29d5b87b32bfae1b7
diff --git a/linker/linker.h b/linker/linker.h
index 43b1e07..b64f42c 100644
--- a/linker/linker.h
+++ b/linker/linker.h
@@ -250,9 +250,7 @@
   bool mips_relocate_got(const VersionTracker& version_tracker,
                          const soinfo_list_t& global_group,
                          const soinfo_list_t& local_group);
-#if !defined(__LP64__)
-  bool mips_check_and_adjust_fp_modes();
-#endif
+
 #endif
   size_t ref_count_;
  public: