remove dupe

Author: elharo

pom.xml

@@ -489,14 +489,6 @@ under the License.
       <plugin>
         <groupId>org.eclipse.sisu</groupId>
         <artifactId>sisu-maven-plugin</artifactId>
-        <executions>
-          <execution>
-            <id>generate-index</id>
-            <goals>
-              <goal>main-index</goal>
-            </goals>
-          </execution>
-        </executions>
       </plugin>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>