[turbofan] Remove leftover Type artifacts from OSR.

BUG=v8:5267
R=jarin@chromium.org

Review-Url: https://codereview.chromium.org/2762143002
Cr-Commit-Position: refs/heads/master@{#43986}

src/compiler/osr.cc

@@ -107,9 +107,6 @@ void PeelOuterLoopsForOsr(Graph* graph, CommonOperatorBuilder* common,
         tmp_inputs.push_back(mapping->at(input->id()));
       }
       copy = graph->NewNode(orig->op(), orig->InputCount(), &tmp_inputs[0]);
-      if (NodeProperties::IsTyped(orig)) {
-        NodeProperties::SetType(copy, NodeProperties::GetType(orig));
-      }
       mapping->at(orig->id()) = copy;
       TRACE(" copy #%d:%s -> #%d\n", orig->id(), orig->op()->mnemonic(),
             copy->id());

src/compiler/pipeline.cc

@@ -1503,8 +1503,6 @@ bool PipelineImpl::CreateGraph() {
   // Perform OSR deconstruction.
   if (info()->is_osr()) {
     Run<OsrDeconstructionPhase>();
-
-    Run<UntyperPhase>();
     RunPrintAndVerify("OSR deconstruction", true);
   }