[Misc] Remove deplicated dependency

xwiki-platform-core/xwiki-platform-index/xwiki-platform-index-tree/xwiki-platform-index-tree-webjar/pom.xml

@@ -44,10 +44,6 @@
       <groupId>org.webjars</groupId>
       <artifactId>jquery</artifactId>
     </dependency>
-    <dependency>
-      <groupId>org.webjars</groupId>
-      <artifactId>jquery</artifactId>
-    </dependency>
     <!-- Used to reorder the pinned child pages. -->
     <dependency>
       <groupId>org.webjars</groupId>