Remove the unused LoadInitialArrayMap.

src/mips/macro-assembler-mips.h

Index: src/mips/macro-assembler-mips.h
diff --git a/src/mips/macro-assembler-mips.h b/src/mips/macro-assembler-mips.h
index 85347c9e51d1f12dc769b8c7e80b0eb6d240339a..45bfcb38d28adc5125a9c908bbdeb256953c5709 100644
--- a/src/mips/macro-assembler-mips.h
+++ b/src/mips/macro-assembler-mips.h
@@ -871,12 +871,6 @@ class MacroAssembler: public Assembler {
       Register scratch,
       Label* no_map_match);
 
-  // Load the initial map for new Arrays from a JSFunction.
-  void LoadInitialArrayMap(Register function_in,
-                           Register scratch,
-                           Register map_out,
-                           bool can_have_holes);
-
   void LoadGlobalFunction(int index, Register function);
   void LoadArrayFunction(Register function);