remove util functions from ng_rose.

src/nfagraph/ng_util.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-2016, Intel Corporation
+ * Copyright (c) 2015-2017, Intel Corporation
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -275,6 +275,11 @@ void duplicateReport(NGHolder &g, ReportID r_old, ReportID r_new);
  * accepts. */
 void reverseHolder(const NGHolder &g, NGHolder &out);
 
+/** \brief Returns the delay or ~0U if the graph cannot match with
+ * the trailing literal. */
+u32 removeTrailingLiteralStates(NGHolder &g, const ue2_literal &lit,
+                                u32 max_delay, bool overhang_ok = true);
+
 #ifndef NDEBUG
 
 // Assertions: only available in internal builds.