[cleanup] Remove items duplicated from parent in spot bugs mojo for n…

…o real reason

src/main/groovy/org/codehaus/mojo/spotbugs/SpotBugsMojo.groovy

@@ -22,8 +22,6 @@ import groovy.xml.XmlSlurper
 import groovy.xml.slurpersupport.GPathResult;
 import groovy.xml.StreamingMarkupBuilder
 
-import org.apache.maven.doxia.siterenderer.Renderer
-import org.apache.maven.doxia.tools.SiteTool
 import org.apache.maven.execution.MavenSession
 import org.apache.maven.plugin.MojoExecutionException
 import org.apache.maven.plugins.annotations.Mojo
@@ -138,10 +136,6 @@ class SpotBugsMojo extends AbstractMavenReport implements SpotBugsPluginsTrait {
     @Parameter(defaultValue = 'spotbugsXml.xml', property = 'spotbugs.outputXmlFilename')
     String spotbugsXmlOutputFilename
 
-    /** Doxia Site Renderer. */
-    @Inject
-    Renderer siteRenderer
-
     /** Directory containing the class files for Spotbugs to analyze. */
     @Parameter(defaultValue = '${project.build.outputDirectory}', required = true)
     File classFilesDirectory
@@ -421,14 +415,6 @@ class SpotBugsMojo extends AbstractMavenReport implements SpotBugsPluginsTrait {
     @Inject
     ResourceManager resourceManager
 
-    /**
-     * SiteTool.
-     *
-     * @since 2.1
-     */
-    @Inject
-    SiteTool siteTool
-
     /**
      * Fail the build on an error.
      *
@@ -720,15 +706,6 @@ class SpotBugsMojo extends AbstractMavenReport implements SpotBugsPluginsTrait {
         return outputDirectory.getAbsolutePath()
     }
 
-    /**
-     * Return the Site Renderer.
-     *
-     */
-    @Override
-    protected Renderer getSiteRenderer() {
-        return this.siteRenderer
-    }
-
     /**
      * Determines if the JXR-Plugin is included in the report section of the POM.
      *