fixed pmd

src/main/java/at/ac/uibk/gitsearch/repository/search/MetaDataRepository.java

@@ -331,9 +331,7 @@ public class MetaDataRepository {
     }
 
     public static String filterDateString(String sourceAsJSON) {
-        String result = sourceAsJSON.replaceAll("[+-]\\d{2}:\\d{2}", "");
-
-        return result;
+        return sourceAsJSON.replaceAll("[+-]\\d{2}:\\d{2}", "");
     }
 
     /**