drop redundant javadoc generation
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-javadoc-plugin</artifactId>
<executions>
- <execution>
- <id>generate-javadoc</id>
- <phase>package</phase>
- <goals>
- <goal>javadoc-no-fork</goal>
- </goals>
- </execution>
<execution>
<id>attach-javadocs</id>
<goals>
