[turbofan] Remove obsolete parts of change lowering.

src/compiler/pipeline.cc

Index: src/compiler/pipeline.cc
diff --git a/src/compiler/pipeline.cc b/src/compiler/pipeline.cc
index eafe3230637ff9047049750205b96f1a5885a33a..5a2b9584b96d1fca5900709c19656c5158d4f127 100644
--- a/src/compiler/pipeline.cc
+++ b/src/compiler/pipeline.cc
@@ -839,8 +839,8 @@ struct EffectControlLinearizationPhase {
     //   chains and lower them,
     // - get rid of the region markers,
     // - introduce effect phis and rewire effects to get SSA again.
-    EffectControlLinearizer introducer(data->jsgraph(), schedule, temp_zone);
-    introducer.Run();
+    EffectControlLinearizer linearizer(data->jsgraph(), schedule, temp_zone);
+    linearizer.Run();
   }
 };