Removed obsolete captcha class

chatto/src/main/java/org/ros/chatto/captcha/WebCaptchaBuilder.java

@@ -1,16 +0,0 @@
-package org.ros.chatto.captcha;
-
-import lombok.Builder;
-
-@Builder
-public class WebCaptchaBuilder {
-	private CaptchaBehaviour captchaBehaviour;
-//	public WebCaptchaBuilder(CaptchaBehaviour captchaBehaviour)
-//	{
-//		this.captchaBehaviour = captchaBehaviour;
-//	}
-	public WebCaptcha build()
-	{
-		return new WebCaptcha(captchaBehaviour);
-	}
-}