Remove flags for event-bus in start-selenium-grid-session-queue.sh after removal in 4.5.0 (SeleniumHQ#1692)

Removed event bus, not used in 4.5.0

Event bus role was removed from session queue in this commit - SeleniumHQ/selenium@4b19fa4

Launching with the flags still in place causes an error and does not allow queue to start

Author: efranken

SessionQueue/start-selenium-grid-session-queue.sh

@@ -5,21 +5,6 @@ set -e
 
 echo "Starting Selenium Grid SessionQueue..."
 
-if [[ -z "${SE_EVENT_BUS_HOST}" ]]; then
-  echo "SE_EVENT_BUS_HOST not set, exiting!" 1>&2
-  exit 1
-fi
-
-if [[ -z "${SE_EVENT_BUS_PUBLISH_PORT}" ]]; then
-  echo "SE_EVENT_BUS_PUBLISH_PORT not set, exiting!" 1>&2
-  exit 1
-fi
-
-if [[ -z "${SE_EVENT_BUS_SUBSCRIBE_PORT}" ]]; then
-  echo "SE_EVENT_BUS_SUBSCRIBE_PORT not set, exiting!" 1>&2
-  exit 1
-fi
-
 if [ ! -z "$SE_OPTS" ]; then
   echo "Appending Selenium options: ${SE_OPTS}"
 fi
@@ -35,8 +20,6 @@ if [ ! -z "$SE_SESSION_QUEUE_PORT" ]; then
 fi
 
 java ${JAVA_OPTS:-$SE_JAVA_OPTS} -jar /opt/selenium/selenium-server.jar sessionqueue \
-  --publish-events tcp://"${SE_EVENT_BUS_HOST}":${SE_EVENT_BUS_PUBLISH_PORT} \
-  --subscribe-events tcp://"${SE_EVENT_BUS_HOST}":${SE_EVENT_BUS_SUBSCRIBE_PORT} \
   --session-request-timeout ${SE_SESSION_REQUEST_TIMEOUT} \
   --session-retry-interval ${SE_SESSION_RETRY_INTERVAL} \
   --bind-host ${SE_BIND_HOST} \