Revert of [interpreter] Add string type feedback to add

src/globals.h

Index: src/globals.h
diff --git a/src/globals.h b/src/globals.h
index 407084adc078e71749ecb4a39d46c79c377ccb02..9466c57f750d64e9e4ae226327bc66d890fdcbda 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -1209,16 +1209,9 @@
 // at different points by performing an 'OR' operation. Type feedback moves
 // to a more generic type when we combine feedback.
 // kSignedSmall -> kNumber  -> kAny
-//                 kString  -> kAny
 class BinaryOperationFeedback {
  public:
-  enum {
-    kNone = 0x0,
-    kSignedSmall = 0x1,
-    kNumber = 0x3,
-    kString = 0x4,
-    kAny = 0xF
-  };
+  enum { kNone = 0x00, kSignedSmall = 0x01, kNumber = 0x3, kAny = 0x7 };
 };
 
 // TODO(epertoso): consider unifying this with BinaryOperationFeedback.