Merge pull request #35885 from chinmayi-chandrasekar/BZ1867056_fluentd_legacy_forward

BZ1867056: Remove legacy forwarding from fluentd

Author: codyhoag

modules/cluster-logging-collector-legacy-fluentd.adoc

@@ -81,7 +81,6 @@ To configure {product-title} to forward logs using the legacy Fluentd method:
     flush_thread_count "#{ENV['FLUSH_THREAD_COUNT'] || 2}"
     retry_max_interval "#{ENV['FORWARD_RETRY_WAIT'] || '300'}"
     retry_forever true
-    overflow_action "#{ENV['BUFFER_QUEUE_FULL_ACTION'] || 'exception'}"
   </buffer>
   <server>
     name <6>