diff --git a/src/main/scala/gitbucket/core/plugin/PluginRegistry.scala b/src/main/scala/gitbucket/core/plugin/PluginRegistry.scala
index 8d9c49e..62acace 100644
--- a/src/main/scala/gitbucket/core/plugin/PluginRegistry.scala
+++ b/src/main/scala/gitbucket/core/plugin/PluginRegistry.scala
@@ -4,13 +4,11 @@
 import java.net.URLClassLoader
 import java.nio.file.{Files, Paths, StandardWatchEventKinds}
 import java.util.Base64
-import java.util.concurrent.atomic.AtomicBoolean
 import java.util.concurrent.ConcurrentLinkedQueue
 import java.util.concurrent.ConcurrentHashMap
 import javax.servlet.ServletContext
 
 import com.github.zafarkhaja.semver.Version
-import gitbucket.core.GitBucketCoreModule
 import gitbucket.core.controller.{Context, ControllerBase}
 import gitbucket.core.model.{Account, Issue}
 import gitbucket.core.service.ProtectedBranchService.ProtectedBranchReceiveHook
@@ -366,7 +364,6 @@
       } catch {
         case e: Throwable => logger.error(s"Error during plugin initialization: ${pluginJar.getName}", e)
       }
-//      }
     }
 
     if (watcher == null) {
diff --git a/src/main/scala/gitbucket/core/servlet/InitializeListener.scala b/src/main/scala/gitbucket/core/servlet/InitializeListener.scala
index f278109..74c043c 100644
--- a/src/main/scala/gitbucket/core/servlet/InitializeListener.scala
+++ b/src/main/scala/gitbucket/core/servlet/InitializeListener.scala
@@ -5,7 +5,7 @@
 import akka.event.Logging
 import com.typesafe.config.ConfigFactory
 import gitbucket.core.GitBucketCoreModule
-import gitbucket.core.plugin.{PluginRegistry, PluginRepository}
+import gitbucket.core.plugin.PluginRegistry
 import gitbucket.core.service.{ActivityService, SystemSettingsService}
 import gitbucket.core.util.DatabaseConfig
 import gitbucket.core.util.Directory._
@@ -20,7 +20,6 @@
 import org.slf4j.LoggerFactory
 import akka.actor.{Actor, ActorSystem, Props}
 import com.typesafe.akka.extension.quartz.QuartzSchedulerExtension
-import com.github.zafarkhaja.semver.{Version => Semver}
 
 import scala.collection.JavaConverters._