--- old/src/hotspot/share/classfile/vmSymbols.hpp	2020-01-24 19:17:49.864545742 +0000
+++ new/src/hotspot/share/classfile/vmSymbols.hpp	2020-01-24 19:17:49.057907879 +0000
@@ -1566,8 +1566,6 @@
     assert(_type_signatures[t] != NULL, "domain check");
     return _type_signatures[t];
   }
-  // inverse of type_signature; returns T_OBJECT if s is not recognized
-  static BasicType signature_type(const Symbol* s);
 
   static Symbol* symbol_at(SID id) {
     assert(id >= FIRST_SID && id < SID_LIMIT, "oob");