[turbofan] Remove unused constructor function matching from typer.

test/cctest/compiler/test-js-typed-lowering.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/js-graph.h"
 #include "src/compiler/js-typed-lowering.h"
 #include "src/compiler/machine-operator.h"
 #include "src/compiler/node-properties.h"
 #include "src/compiler/opcodes.h"
 #include "src/compiler/operator-properties.h"
@@ skipping 20 matching lines @@
  public:
   explicit JSTypedLoweringTester(int num_parameters = 0)
       : isolate(main_isolate()),
         binop(NULL),
         unop(NULL),
         javascript(main_zone()),
         machine(main_zone()),
         simplified(main_zone()),
         common(main_zone()),
         graph(main_zone()),
-        typer(main_isolate(), &graph, nullptr, MaybeHandle<Context>()),
+        typer(main_isolate(), &graph),
         context_node(NULL) {
     graph.SetStart(graph.NewNode(common.Start(num_parameters)));
     graph.SetEnd(graph.NewNode(common.End(1)));
     typer.Run();
   }
 
   Isolate* isolate;
   const Operator* binop;
   const Operator* unop;
   JSOperatorBuilder javascript;
@@ skipping 1206 matching lines @@
           CHECK_EQ(p1, r->InputAt(0));
           CHECK_EQ(p0, r->InputAt(1));
         } else {
           CHECK_EQ(p0, r->InputAt(0));
           CHECK_EQ(p1, r->InputAt(1));
         }
       }
     }
   }
 }