Removed unused imports

src/main/java/de/thm/arsnova/dao/CouchDBDao.java

@@ -34,15 +34,11 @@ import java.util.Set;
 import net.sf.ezmorph.Morpher;
 import net.sf.ezmorph.MorpherRegistry;
 import net.sf.ezmorph.bean.BeanMorpher;
-import net.sf.ezmorph.bean.MorphDynaBean;
 import net.sf.json.JSONArray;
 import net.sf.json.JSONException;
 import net.sf.json.JSONObject;
-import net.sf.json.JsonConfig;
 import net.sf.json.util.JSONUtils;
 
-import org.apache.commons.beanutils.DynaBean;
-import org.apache.commons.beanutils.DynaClass;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;