Revert of [builtins] Unify the various versions of [[Call]] with a Call builtin.

src/x64/macro-assembler-x64.cc

Index: src/x64/macro-assembler-x64.cc
diff --git a/src/x64/macro-assembler-x64.cc b/src/x64/macro-assembler-x64.cc
index 59482bea135bd42b6603ae474d72fa6abdf15997..c67d955a897e4dfc67623626f334f02f3b92f279 100644
--- a/src/x64/macro-assembler-x64.cc
+++ b/src/x64/macro-assembler-x64.cc
@@ -3390,18 +3390,6 @@
     CmpInstanceType(object, LAST_NAME_TYPE);
     Pop(object);
     Check(below_equal, kOperandIsNotAName);
-  }
-}
-
-
-void MacroAssembler::AssertFunction(Register object) {
-  if (emit_debug_code()) {
-    testb(object, Immediate(kSmiTagMask));
-    Check(not_equal, kOperandIsASmiAndNotAFunction);
-    Push(object);
-    CmpObjectType(object, JS_FUNCTION_TYPE, object);
-    Pop(object);
-    Check(not_equal, kOperandIsNotAFunction);
   }
 }
 
@@ -4555,12 +4543,6 @@
 }
 
 
-void MacroAssembler::LoadGlobalProxy(Register dst) {
-  movp(dst, GlobalObjectOperand());
-  movp(dst, FieldOperand(dst, GlobalObject::kGlobalProxyOffset));
-}
-
-
 void MacroAssembler::LoadTransitionedArrayMapConditional(
     ElementsKind expected_kind,
     ElementsKind transitioned_kind,