[branch-2.8]remove unnecessary jar name in LINCENSE files

[hangc0276]

Motivation

When run license check, it throw the following exception

Run src/check-binary-license ./distribution/server/target/apache-pulsar-*-bin.tar.gz
  src/check-binary-license ./distribution/server/target/apache-pulsar-*-bin.tar.gz
  shell: /usr/bin/bash -e {0}
  env:
    MAVEN_OPTS: -Dhttp.keepAlive=false -Dmaven.wagon.http.pool=false -Dmaven.wagon.http.retryHandler.class=standard -Dmaven.wagon.http.retryHandler.count=3
    JAVA_HOME: /opt/hostedtoolcache/Java_Adopt_jdk/11.0.11-9/x64
netty-codec-socks-4.1.66.Final.jar mentioned in lib/presto/LICENSE, but not bundled
netty-handler-proxy-4.1.66.Final.jar mentioned in lib/presto/LICENSE, but not bundled

Modification

remove netty-codec-socks-4.1.66.Final.jar and netty-handler-proxy-4.1.66.Final.jar from license file.