Remove maven site deployment related plugins

The previous site plugin utilizes several plugins. In about half of the cases, the respective version of a plugin as described in the outside plugin section. The following list enumerates those plugins and my reasoning to remove them safely from the section plugins.

- maven-project-info-reports-plugin (remove - because no reports get generated)
- maven-javadoc-plugin (stays - even when a profile doc exists, which provides a dedicated setup.) We have to discuss the removal to avoid any side effects.
- emma-maven-plugin (stays - my impression is that it is a duplicated declaration)
- maven-jxr-plugin (remove - only version declaration, with no further config, not utilized anywhere)
- maven-surefire-report-plugin (remove - only version declaration, with no further config, not utilized anywhere)
- apache-rat-plugin (stays - decision is straightforward. We have to discuss a restructure because the plugin gets mentioned three times; I guess one can get removed.
- maven-pmd-plugin (remove - only version declaration, with no further config, not utilized anywhere)
- spotbugs-maven-plugin (stays - beacuse of its extended configuration section - discuss a removal)

project/pom.xml

@@ -873,22 +873,6 @@
           <artifactId>maven-install-plugin</artifactId>
           <version>2.4</version>
         </plugin>
-        <plugin>
-          <artifactId>maven-jxr-plugin</artifactId>
-          <version>2.3</version>
-        </plugin>
-        <plugin>
-          <artifactId>maven-pmd-plugin</artifactId>
-          <version>2.7.1</version>
-        </plugin>
-        <plugin>
-          <artifactId>maven-project-info-reports-plugin</artifactId>
-          <version>2.5.1</version>
-        </plugin>
-        <plugin>
-          <artifactId>maven-surefire-report-plugin</artifactId>
-          <version>${maven-surefire-plugin.version}</version>
-        </plugin>
         <plugin>
           <groupId>org.apache.rat</groupId>
           <artifactId>apache-rat-plugin</artifactId>