Remove unused method.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100620 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/AsmPrinter/DwarfDebug.h

@@ -527,14 +527,6 @@ private:
     return Lines.size();
   }
   
-  /// getOrCreateSourceID - Public version of GetOrCreateSourceID. This can be
-  /// timed. Look up the source id with the given directory and source file
-  /// names. If none currently exists, create a new id and insert it in the
-  /// SourceIds map. This can update DirectoryNames and SourceFileNames maps as
-  /// well.
-  unsigned getOrCreateSourceID(const std::string &DirName,
-                               const std::string &FileName);
-  
   /// extractScopeInformation - Scan machine instructions in this function
   /// and collect DbgScopes. Return true, if atleast one scope was found.
   bool extractScopeInformation();