Removed a hack of using toString() on AuditEvent in the default logger.

src/checkstyle/com/puppycrawl/tools/checkstyle/AuditEvent.java

@@ -109,13 +109,4 @@ public class AuditEvent
         return mMessage;
     }
 
-    /**
-     * return an Emacs compliant line with the following pattern:
-     * <file>:<line>: <message>
-     * @return informative line representing the event.
-     */
-    public String toString()
-    {
-        return mFileName + ":" + getLine() + ": " + getMessage();
-    }
 }

src/checkstyle/com/puppycrawl/tools/checkstyle/DefaultLogger.java

@@ -71,7 +71,9 @@ public class DefaultLogger
     /** @see AuditListener **/
     public void addError(AuditEvent aEvt)
     {
-        mWriter.println(aEvt);
+        // Print an Emacs compliant line.
+        mWriter.println(aEvt.getFileName() + ":" + aEvt.getLine()
+                        + ": " + aEvt.getMessage());
     }
 
     /** @see AuditListener **/