[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 ed223a8c073e639a8958eefbed1d0b970e7a852e..b512c1e9c2f843b8ef2db2cbc21d82107a7eddb4 100644
--- a/src/objects-debug.cc
+++ b/src/objects-debug.cc
@@ -164,9 +164,6 @@ 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;
@@ -820,15 +817,6 @@ 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();