Fix site generation (#15)

Author: gnodet

pom.xml

@@ -96,11 +96,6 @@ limitations under the License.
           <artifactId>maven-surefire-plugin</artifactId>
           <version>3.0.0</version>
         </plugin>
-        <plugin>
-          <groupId>org.apache.maven.plugins</groupId>
-          <artifactId>maven-site-plugin</artifactId>
-          <version>4.0.0-M7</version>
-        </plugin>
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-compiler-plugin</artifactId>