fix bug

cqb-paper/src/main/java/com/qmth/cqb/paper/service/impl/PropertyServiceImpl.java

@@ -8,7 +8,6 @@ import org.springframework.stereotype.Service;
 
 import cn.com.qmth.examcloud.common.uac.entity.AccessUser;
 
-import com.netflix.infix.lang.infix.antlr.EventFilterParser.null_predicate_return;
 import com.qmth.cqb.paper.assemble.PropertyAssembler;
 import com.qmth.cqb.paper.dao.PropertyRepo;
 import com.qmth.cqb.paper.dto.PropertyDto;