remove duplicated dependencies from pom.xml
<dependencyManagement>
<dependencies>
<!-- third-party dependency -->
- <dependency>
- <groupId>org.antlr</groupId>
- <artifactId>antlr4</artifactId>
- <version>4.7.1</version>
- </dependency>
<dependency>
<groupId>org.kohsuke</groupId>
<artifactId>groovy-sandbox</artifactId>
