[turbofan] Rip out the unused OsrGuard node.

src/compiler/bytecode-graph-builder.cc

Index: src/compiler/bytecode-graph-builder.cc
diff --git a/src/compiler/bytecode-graph-builder.cc b/src/compiler/bytecode-graph-builder.cc
index e4dd0e1aaf5acdfaaf1cda19a64bba9368743b48..ccc360d846e4456ccc5a7eeb6d5b58b88733eef2 100644
--- a/src/compiler/bytecode-graph-builder.cc
+++ b/src/compiler/bytecode-graph-builder.cc
@@ -318,24 +318,6 @@ void BytecodeGraphBuilder::Environment::PrepareForOsrEntry() {
     if (i >= accumulator_base()) idx = Linkage::kOsrAccumulatorRegisterIndex;
     values()->at(i) = graph()->NewNode(common()->OsrValue(idx), entry);
   }
-
-  BailoutId loop_id(builder_->bytecode_iterator().current_offset());
-  Node* frame_state =
-      Checkpoint(loop_id, OutputFrameStateCombine::Ignore(), false, nullptr);
-  Node* checkpoint =
-      graph()->NewNode(common()->Checkpoint(), frame_state, entry, entry);
-  UpdateEffectDependency(checkpoint);
-
-  // Create the OSR guard nodes.
-  const Operator* guard_op = common()->OsrGuard(OsrGuardType::kUninitialized);
-  Node* effect = checkpoint;
-  for (int i = 0; i < size; i++) {
-    values()->at(i) = effect =
-        graph()->NewNode(guard_op, values()->at(i), effect, entry);
-  }
-  Node* context = effect = graph()->NewNode(guard_op, Context(), effect, entry);
-  SetContext(context);
-  UpdateEffectDependency(effect);
 }
 
 bool BytecodeGraphBuilder::Environment::StateValuesRequireUpdate(