Use moved Factory module

The module moved upstream.

Change-Id: I812f11a06533ea1df8f5361cd405c14c9d8fa862
diff --git a/src/main/java/com/googlesource/gerrit/plugins/importer/Module.java b/src/main/java/com/googlesource/gerrit/plugins/importer/Module.java
index dcf4099..1cad41f 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/importer/Module.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/importer/Module.java
@@ -21,12 +21,12 @@
 
 import com.google.gerrit.extensions.annotations.Exports;
 import com.google.gerrit.extensions.config.CapabilityDefinition;
+import com.google.gerrit.extensions.config.FactoryModule;
 import com.google.gerrit.extensions.events.LifecycleListener;
 import com.google.gerrit.extensions.registration.DynamicMap;
 import com.google.gerrit.extensions.registration.DynamicSet;
 import com.google.gerrit.extensions.restapi.RestApiModule;
 import com.google.gerrit.extensions.webui.TopMenu;
-import com.google.gerrit.server.config.FactoryModule;
 import com.google.inject.internal.UniqueAnnotations;
 
 class Module extends FactoryModule {