Remove superfluous escape in two regexp

airsonic-main/src/main/java/org/airsonic/player/service/metadata/MetaDataParser.java

@@ -159,11 +159,11 @@ public abstract class MetaDataParser {
         title = title.trim();
 
         // Don't remove numbers if true track number is missing, or if title does not start with it.
-        if (trackNumber == null || !title.matches("0?" + trackNumber + "[\\.\\- ].*")) {
+        if (trackNumber == null || !title.matches("0?" + trackNumber + "[. -].*")) {
             return title;
         }
 
-        String result = title.replaceFirst("^\\d{2}[\\.\\- ]+", "");
+        String result = title.replaceFirst("^\\d{2}[. -]+", "");
         return result.length() == 0 ? title : result;
     }
 }