[turbofan] Remove type feedback from AstGraphBuilder pipeline.

src/compilation-info.h

Index: src/compilation-info.h
diff --git a/src/compilation-info.h b/src/compilation-info.h
index 77b9e34306aa236fdd9dd0bb0d930cc3b524ffdb..2abf624fdf1b002b4bb6d68f839d6285f08a369b 100644
--- a/src/compilation-info.h
+++ b/src/compilation-info.h
@@ -49,7 +49,6 @@ class CompilationInfo final {
     kSourcePositionsEnabled = 1 << 13,
     kBailoutOnUninitialized = 1 << 14,
     kOptimizeFromBytecode = 1 << 15,
-    kTypeFeedbackEnabled = 1 << 16,
   };
 
   CompilationInfo(ParseInfo* parse_info, Handle<JSFunction> closure);
@@ -141,12 +140,6 @@ class CompilationInfo final {
     return GetFlag(kDeoptimizationEnabled);
   }
 
-  void MarkAsTypeFeedbackEnabled() { SetFlag(kTypeFeedbackEnabled); }
-
-  bool is_type_feedback_enabled() const {
-    return GetFlag(kTypeFeedbackEnabled);
-  }
-
   void MarkAsAccessorInliningEnabled() { SetFlag(kAccessorInliningEnabled); }
 
   bool is_accessor_inlining_enabled() const {