fix bug in mqtt

iznauy · iznauy · commit 4628c53613b3 · 2021-10-15T11:10:47.000+08:00
diff --git a/core/pom.xml b/core/pom.xml
@@ -119,7 +119,7 @@
         <dependency>
             <groupId>io.moquette</groupId>
             <artifactId>moquette-broker</artifactId>
-            <version>0.16-SNAPSHOT</version>
+            <version>0.15</version>
             <exclusions>
                 <exclusion>
                     <groupId>org.slf4j</groupId>
diff --git a/core/src/main/java/cn/edu/tsinghua/iginx/sql/operator/ClearDataOperator.java b/core/src/main/java/cn/edu/tsinghua/iginx/sql/operator/ClearDataOperator.java
@@ -8,7 +8,6 @@
 
 import java.util.ArrayList;
 import java.util.Arrays;
-import java.util.Collections;
 import java.util.List;
 
 public class ClearDataOperator extends Operator {
