code: public static synchronized boolean removeDenyIP(String ip) {
  		if(deniedIP!=null && deniedIP.remove(ip)!=null) {
  			writeIP();
  			if(deniedIP.isEmpty()) {
  				deniedIP=null;
  			}
  			return true;
  		}
  		return false;
  	}
docs: Return of "True" means IP has was removed.
  Return of "False" means IP wasn't being denied.
  
  @param ip
  @return