remove unused imports

scm-webapp/src/main/java/sonia/scm/boot/BootstrapListener.java

@@ -53,7 +53,6 @@ import java.io.File;
 import java.net.MalformedURLException;
 import java.net.URL;
 
-import java.util.LinkedList;
 import java.util.List;
 
 import javax.servlet.ServletContext;

scm-webapp/src/main/java/sonia/scm/plugin/PluginClassLoader.java

@@ -31,10 +31,6 @@
 
 package sonia.scm.plugin;
 
-//~--- JDK imports ------------------------------------------------------------
-
-import java.io.Closeable;
-
 /**
  * The PluginClassLoader interface is mainly a marker to find the class loader
  * in a memory dump. This should make it easier to find class loader leaks.

scm-webapp/src/main/java/sonia/scm/template/TemplateServlet.java

@@ -39,8 +39,6 @@ import com.google.common.collect.ImmutableSet;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
 
-import freemarker.template.Configuration;
-
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;