Remove K8S_MEMBERSHIP_SCHEME_VERSION from docker-is-6.0.x-rocky

dockerfiles/rocky/is/Dockerfile

@@ -83,7 +83,6 @@ ARG WSO2_SERVER_HOME=${USER_HOME}/${WSO2_SERVER}
 ARG WSO2_SERVER_DIST_URL=""
 # build arguments for external artifacts
 ARG DNS_JAVA_VERSION=2.1.8
-ARG K8S_MEMBERSHIP_SCHEME_VERSION=1.0.9
 # build argument for MOTD
 ARG MOTD='printf "\n\
 Welcome to WSO2 Docker resources.\n\
@@ -125,7 +124,6 @@ RUN \
 
 # add libraries for Kubernetes membership scheme based clustering
 ADD --chown=wso2carbon:wso2 https://repo1.maven.org/maven2/dnsjava/dnsjava/${DNS_JAVA_VERSION}/dnsjava-${DNS_JAVA_VERSION}.jar ${WSO2_SERVER_HOME}/repository/components/lib
-ADD --chown=wso2carbon:wso2 http://maven.wso2.org/nexus/content/repositories/releases/org/wso2/carbon/kubernetes/artifacts/kubernetes-membership-scheme/${K8S_MEMBERSHIP_SCHEME_VERSION}/kubernetes-membership-scheme-${K8S_MEMBERSHIP_SCHEME_VERSION}.jar ${WSO2_SERVER_HOME}/repository/components/dropins
 
 # set the user and work directory
 USER ${USER_ID}