Revert "Fix inconsistencies wrt whitespaces."

src/char-predicates.h

Index: src/char-predicates.h
diff --git a/src/char-predicates.h b/src/char-predicates.h
index 743693157f1f76033942e10b40ac9c6eb3b59223..767ad6513afa7e3d5995a31a1df22372bf7a9484 100644
--- a/src/char-predicates.h
+++ b/src/char-predicates.h
@@ -66,14 +66,6 @@ struct IdentifierPart {
   }
 };
 
-
-struct WhiteSpace {
-  static inline bool Is(uc32 c) {
-    return unibrow::WhiteSpace::Is(c) ||
-        c == 0xFEFF;  // BYTE ORDER MARK is a white space in ECMA-262 5.1, 7.2.
-  }
-};
-
 } }  // namespace v8::internal
 
 #endif  // V8_CHAR_PREDICATES_H_