Satisfy Codacy.

api/src/main/java/com/dmdirc/events/DisplayLocation.java

     }
 
     interface DisplayLocationTester {
-        public boolean test(final WindowModel model, final DisplayableEvent event);
+        boolean test(final WindowModel model, final DisplayableEvent event);
     }
 };

src/main/java/com/dmdirc/ui/messages/BackBufferImpl.java

 
 import com.dmdirc.events.DisplayLocation;
 import com.dmdirc.events.DisplayProperty;
-import com.dmdirc.events.DisplayPropertyMap;
 import com.dmdirc.events.DisplayableEvent;
 import com.dmdirc.events.eventbus.EventBus;
 import com.dmdirc.interfaces.WindowModel;