Remove unusable import
@@ -4,7 +4,6 @@ import greencity.constant.ValidationConstants;
import greencity.entity.Advice;
import javax.validation.constraints.Min;
import javax.validation.constraints.NotBlank;
-import javax.validation.constraints.NotNull;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.hibernate.validator.constraints.Length;
