update license

LICENSE

@@ -202,30 +202,15 @@
    limitations under the License.
 
 
-Apache Dubbo Submodules:
+Apache Dubbo Ops Submodules:
 
-Apache Dubbo includes a number of submodules with separate copyright notices
+Apache Dubbo Ops includes a number of submodules with separate copyright notices
 and license terms. Your use of these submodules is subject to the terms and
 conditions of the following licenses.
 
-For the org.apache.dubbo.common.concurrent package:
-
-This product bundles and repackages the following code in Google Guava 16.0.1, which is available under a
-"Apache License 2.0" license. For details, see https://github.com/google/guava/blob/v16.0.1/COPYING.
-
- * com.google.common.util.concurrent.ExecutionList
- * com.google.common.util.concurrent.ListenableFuture
- * com.google.common.util.concurrent.ListenableFutureTask
-
-For the package org.apache.dubbo.common.threadlocal and org.apache.dubbo.common.timer:
-
-This product contains a modified portion of 'Netty', an event-driven asynchronous network application framework also
- under a "Apache License 2.0" license, see https://github.com/netty/netty/blob/4.1/LICENSE.txt:
-
- * io.netty.util.concurrent.FastThreadLocal
- * io.netty.util.internal.InternalThreadLocalMap
- * io.netty.util.Timer
- * io.netty.util.TimerTask
- * io.netty.util.Timeout
- * io.netty.util.HashedWheelTimer
+================================================================
+For dubbo-admin/frontend/static/fonts
+This product bundles files from google fonts which is licensed under the Apache License v2
+For details, see https://github.com/google/fonts,
+                 https://github.com/google/material-design-icons