removing as it doesn't belong in here.

src/filter_factory.cpp

@@ -50,35 +50,7 @@ public:
         }
         else
         {
-            // Backward compatiblity for version pre 2.0.0
+            throw config_error( "Failed to parse expression: \"" + str + "\"" );           
-            // To be removed in 2.1.0...
-            if (!boost::algorithm::icontains(str,"'") 
-                && !boost::algorithm::icontains(str,"[")
-                && !boost::algorithm::icontains(str,"]")
-                && !boost::algorithm::icontains(str," ")
-                && !boost::algorithm::icontains(str,"\""))
-            {
-
-                expression_ptr expr1(new expr_node(true));
-                mapnik::expression_grammar<std::string::const_iterator> g1(tr);
-                std::string str1("[" + str + "]");
-                std::string::const_iterator itr1 = str1.begin();
-                std::string::const_iterator end1 = str1.end();
-                bool r1 = boost::spirit::qi::phrase_parse(itr1,end1,g1, boost::spirit::standard_wide::space,*expr1);
-                if (r1  && itr1==end1)
-                {
-                    std::clog << "Deprecation Warning: symbolizer value now an expression, please wrap properly in brackets like \"" + str1 + "\"\n";
-                    return expr1;
-                }
-                else
-                {
-                    throw config_error( "Failed to parse expression: \"" + str + "\"" );
-                }
-            }
-            else
-            {
-                throw config_error( "Failed to parse expression: \"" + str + "\"" );           
-            }
         }
     }
 };