Removed trailing whitespaces.

src/main/java/com/sk89q/worldedit/UnknownDirectionException.java

@@ -25,9 +25,9 @@ package com.sk89q.worldedit;
  */
 public class UnknownDirectionException extends WorldEditException {
     private static final long serialVersionUID = 5705931351293248358L;
-    
+
     private String dir;
-    
+
     public UnknownDirectionException(String dir) {
         this.dir = dir;
     }