[가입][New] 리팩토링 2 - 오류 수정

app/src/main/java/kr/co/zumo/app/lifeplus/view/screen/signup/SignUpBaseModel.java

@@ -17,10 +17,6 @@ import kr.co.zumo.app.lifeplus.model.Model;
  */
 public abstract class SignUpBaseModel extends Model {
 
-  public void setOnBoardingStart() {
-    SignUpModelHelper.getInstance().setOnBoardingStart();
-  }
-
   public boolean isOnBoardingStarted() {
     return SignUpModelHelper.getInstance().isOnBoardingStarted();
   }