Replaced preg_replace with str_replace.

Author: fpapadopou

Symfony/src/Codebender/CompilerBundle/Handler/CompilerHandler.php

@@ -1256,12 +1256,12 @@ private function pathRemover ($output, $compiler_config) {
 
         // Remove any instance of codebender arduino core files folder name from the text
 //        $modified = preg_replace($core_pattern, '', $modified);
-        $modified = preg_replace($compiler_config["arduino_cores_dir"], '', $modified);
+        $modified = str_replace($compiler_config["arduino_cores_dir"], '', $modified);
 
         // Remove any instance of codebender external core file folder name from the text
 //        $modified = preg_replace($external_core_pattern, '', $modified);
         if (isset($compiler_config["external_core_files"]) && $compiler_config["external_core_files"] != "")
-            $modified = preg_replace($compiler_config["external_core_files"], '', $modified);
+            $modified = str_replace($compiler_config["external_core_files"], '', $modified);
 
         return $modified;
     }