Remove unused function PBD::sys::extension

git-svn-id: svn://localhost/ardour2/branches/3.0@12866 d708f5d6-7413-0410-9779-e7cbd77b26cf

libs/pbd/filesystem.cc

@@ -164,22 +164,6 @@ basename (const path & p)
 	return base.substr (0, n);
 }
 
-string
-extension (const path & p)
-{
-	string base(p.leaf());
-
-	string::size_type n = base.rfind ('.');
-
-	if (n != string::npos)
-	{
-		return base.substr(n);
-	}
-
-	return string();
-
-}
-
 } // namespace sys
 
 } // namespace PBD

libs/pbd/pbd/filesystem.h

@@ -175,15 +175,6 @@ void rename (const path& from_path, const path& to_path);
  */ 
 std::string basename (const path& p);
 
-/**
- * @return If the filename contains a dot, return a substring of the
- * filename starting the rightmost dot to the end of the string, otherwise
- * an empty string.
- *
- * @param p a file path.
- */
-std::string extension (const path& p);
-
 } // namespace sys
 
 } // namespace PBD