Remove getMap from parser interface.

Doesn't really make any sense at all, and isn't used anywhere to
my knowledge.

common/src/com/dmdirc/parser/common/BaseParser.java

@@ -71,9 +71,6 @@ public abstract class BaseParser extends ThreadedParser {
     /** The callback manager to use for this parser. */
     private final CallbackManager callbackManager;
 
-    /** A map for callers to use to store things for no sane reason. */
-    private final Map<Object, Object> map = new HashMap<>();
-
     /**
      * Creates a new base parser for the specified URI.
      *
@@ -178,12 +175,6 @@ public abstract class BaseParser extends ThreadedParser {
         return callbackManager.getCallback(callback);
     }
 
-    @Override
-    @SuppressWarnings("ReturnOfCollectionOrArrayField")
-    public Map<Object, Object> getMap() {
-        return map;
-    }
-
     @Override
     public void joinChannel(final String channel) {
         joinChannels(new ChannelJoinRequest(channel));

common/src/com/dmdirc/parser/interfaces/Parser.java

@@ -31,7 +31,6 @@ import com.dmdirc.parser.common.QueuePriority;
 import java.net.URI;
 import java.util.Collection;
 import java.util.List;
-import java.util.Map;
 
 /**
  * A parser connects to a back-end chat system and handles all communication
@@ -158,14 +157,6 @@ public interface Parser {
      */
     void setProxy(URI proxy);
 
-    /**
-     * Retrieves a {@link Map} which can be used to store arbitrary data
-     * about the client.
-     *
-     * @return A map used for storing arbitrary data
-     */
-    Map<Object, Object> getMap();
-
     /**
      * Determines the maximimum length a message of the specified type may be.
      *