Merge pull request #454 from csmith/master

Remove unused methods/fields.

debug/src/com/dmdirc/addons/debug/DebugCommand.java

 /**
  * Debug command, serves as a proxy between debug commands and normal commands.
  */
-@SuppressWarnings("unused")
 public abstract class DebugCommand {
 
-    /** The format name used for command output. */
-    public static final String FORMAT_OUTPUT = "commandOutput";
-    /** The format name used for command errors. */
-    public static final String FORMAT_ERROR = "commandError";
     /** Parent debug command. */
     private final Provider<Debug> commandProvider;
 

redirect/src/com/dmdirc/addons/redirect/FakeWriteableFrameContainer.java

 import com.dmdirc.interfaces.Connection;
 import com.dmdirc.interfaces.WindowModel;
 import com.dmdirc.ui.messages.BackBufferFactory;
-import com.dmdirc.ui.messages.Formatter;
 
 import java.util.Collections;
 import java.util.Optional;
         target.sendLine(line);
     }
 
-    @Override
-    @Deprecated
-    public void addLine(final String type, final Object... args) {
-        sendLine(Formatter.formatMessage(getConfigManager(), type, args));
-    }
-
     @Override
     public int getMaxLineLength() {
         return target.getMaxLineLength();