[runtime] [proxy] removing JSFunctionProxy and related code.

src/objects-debug.cc

Index: src/objects-debug.cc
diff --git a/src/objects-debug.cc b/src/objects-debug.cc
index d346b321fdc8c1c039900510ff52a69d29af2618..5420b5dff3085ee1eba6820fed59c3eeeb0947a7 100644
--- a/src/objects-debug.cc
+++ b/src/objects-debug.cc
@@ -161,9 +161,6 @@ void HeapObject::HeapObjectVerify() {
     case JS_PROXY_TYPE:
       JSProxy::cast(this)->JSProxyVerify();
       break;
-    case JS_FUNCTION_PROXY_TYPE:
-      JSFunctionProxy::cast(this)->JSFunctionProxyVerify();
-      break;
     case FOREIGN_TYPE:
       Foreign::cast(this)->ForeignVerify();
       break;
@@ -806,15 +803,6 @@ void JSProxy::JSProxyVerify() {
 }
 
 
-void JSFunctionProxy::JSFunctionProxyVerify() {
-  CHECK(IsJSFunctionProxy());
-  JSProxyVerify();
-  VerifyPointer(call_trap());
-  VerifyPointer(construct_trap());
-  CHECK(map()->is_callable());
-}
-
-
 void JSArrayBuffer::JSArrayBufferVerify() {
   CHECK(IsJSArrayBuffer());
   JSObjectVerify();