diff --git a/commons/src/main/java/com/navercorp/pinpoint/common/util/MockClock.java b/commons/src/main/java/com/navercorp/pinpoint/common/util/MockClock.java
deleted file mode 100644
index b41d89adba0b6a43ec2d83608d8375f4418de02f..0000000000000000000000000000000000000000
--- a/commons/src/main/java/com/navercorp/pinpoint/common/util/MockClock.java
+++ /dev/null
@@ -1,34 +0,0 @@
-/*
- * Copyright 2014 NAVER Corp.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.navercorp.pinpoint.common.util;
-
-/**
- * @author emeroad
- */
-public class MockClock implements Clock {
-
-    private long time;
-
-    public void setTime(long time) {
-        this.time = time;
-    }
-
-    @Override
-    public long getTime() {
-        return time;
-    }
-}
diff --git a/web/src/main/java/com/navercorp/pinpoint/web/servlet/NoCacheFilter.java b/web/src/main/java/com/navercorp/pinpoint/web/servlet/NoCacheFilter.java
deleted file mode 100644
index 51b380f4b1c9d8dc73f3218191887b0d3f0278e2..0000000000000000000000000000000000000000
--- a/web/src/main/java/com/navercorp/pinpoint/web/servlet/NoCacheFilter.java
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * Copyright 2014 NAVER Corp.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.navercorp.pinpoint.web.servlet;
-
-import java.io.IOException;
-
-import javax.servlet.Filter;
-import javax.servlet.FilterChain;
-import javax.servlet.FilterConfig;
-import javax.servlet.ServletException;
-import javax.servlet.ServletRequest;
-import javax.servlet.ServletResponse;
-import javax.servlet.http.HttpServletResponse;
-
-/**
- * 
- * @author netspider
- * 
- */
-public class NoCacheFilter implements Filter {
-
-
-    public void init(FilterConfig filterConfig) {
-
-    }
-
-    public void destroy() {
-
-    }
-
-    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
-        HttpServletResponse httpResponse = (HttpServletResponse) response;
-        httpResponse.setHeader("Cache-Control", "no-cache");
-        httpResponse.setDateHeader("Expires", 0);
-        httpResponse.setHeader("Pragma", "No-cache");
-        chain.doFilter(request, response);
-    }
-}
diff --git a/web/src/main/java/com/navercorp/pinpoint/web/util/UnwrapRootJackson2ObjectMapper.java b/web/src/main/java/com/navercorp/pinpoint/web/util/UnwrapRootJackson2ObjectMapper.java
deleted file mode 100644
index f9ce318b6874741c15dcd62a47227c1ab24308b0..0000000000000000000000000000000000000000
--- a/web/src/main/java/com/navercorp/pinpoint/web/util/UnwrapRootJackson2ObjectMapper.java
+++ /dev/null
@@ -1,30 +0,0 @@
-/*
- * Copyright 2014 NAVER Corp.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.navercorp.pinpoint.web.util;
-
-import com.fasterxml.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.databind.SerializationFeature;
-
-/**
- * @author emeroad
- */
-public class UnwrapRootJackson2ObjectMapper extends ObjectMapper {
-    public UnwrapRootJackson2ObjectMapper() {
-        super();
-        this.configure(SerializationFeature.WRAP_ROOT_VALUE, false);
-    }
-}