4 files changed, 6 insertions, 15 deletions
diff --git a/src/org/traccar/api/resource/GroupResource.java b/src/org/traccar/api/resource/GroupResource.java
index 49f839499..e22796645 100644
--- a/src/org/traccar/api/resource/GroupResource.java
+++ b/src/org/traccar/api/resource/GroupResource.java
@@ -17,7 +17,6 @@ package org.traccar.api.resource;
 
 import org.traccar.Context;
 import org.traccar.api.BaseResource;
-import org.traccar.model.Device;
 import org.traccar.model.Group;
 
 import javax.ws.rs.Consumes;
diff --git a/src/org/traccar/database/GroupTree.java b/src/org/traccar/database/GroupTree.java
index b383b1501..4a2321f58 100644
--- a/src/org/traccar/database/GroupTree.java
+++ b/src/org/traccar/database/GroupTree.java
@@ -33,11 +33,11 @@ public class GroupTree {
         private Device device;
         private Collection<TreeNode> children = new HashSet<>();
 
-        public TreeNode(Group group) {
+        TreeNode(Group group) {
             this.group = group;
         }
 
-        public TreeNode(Device device) {
+        TreeNode(Device device) {
             this.device = device;
         }
 
@@ -59,14 +59,10 @@ public class GroupTree {
             if (other == this) {
                 return true;
             }
-            if (group != null) {
-                if (other.group != null) {
-                    return group.getId() == other.group.getId();
-                }
-            } else if (device != null) {
-                if (other.device != null) {
-                    return device.getId() == other.device.getId();
-                }
+            if (group != null && other.group != null) {
+                return group.getId() == other.group.getId();
+            } else if (device != null && other.device != null) {
+                return device.getId() == other.device.getId();
             }
             return false;
         }
diff --git a/src/org/traccar/protocol/FoxProtocol.java b/src/org/traccar/protocol/FoxProtocol.java
index 25190e967..cc069692b 100644
--- a/src/org/traccar/protocol/FoxProtocol.java
+++ b/src/org/traccar/protocol/FoxProtocol.java
@@ -17,9 +17,7 @@ package org.traccar.protocol;
 
 import org.jboss.netty.bootstrap.ServerBootstrap;
 import org.jboss.netty.channel.ChannelPipeline;
-import org.jboss.netty.handler.codec.frame.LineBasedFrameDecoder;
 import org.jboss.netty.handler.codec.string.StringDecoder;
-import org.jboss.netty.handler.codec.string.StringEncoder;
 import org.traccar.BaseProtocol;
 import org.traccar.CharacterDelimiterFrameDecoder;
 import org.traccar.TrackerServer;
diff --git a/src/org/traccar/protocol/MiniFinderProtocolEncoder.java b/src/org/traccar/protocol/MiniFinderProtocolEncoder.java
index 729c57573..e5762f5dd 100644
--- a/src/org/traccar/protocol/MiniFinderProtocolEncoder.java
+++ b/src/org/traccar/protocol/MiniFinderProtocolEncoder.java
@@ -21,8 +21,6 @@ import org.traccar.model.Command;
 
 public class MiniFinderProtocolEncoder extends StringProtocolEncoder {
 
-    private static final String prefix = "123456";
-
     @Override
     protected Object encodeCommand(Command command) {