Remove Kafka worker from reference config. (#32440)

Follow up from #31978

auditbeat/auditbeat.reference.yml

@@ -747,9 +747,6 @@ output.elasticsearch:
     # Strategy for fetching the topics metadata from the broker. Default is false.
     #full: false
 
-  # The number of concurrent load-balanced Kafka output workers.
-  #worker: 1
-
   # The number of times to retry publishing an event after a publishing failure.
   # After the specified number of retries, events are typically dropped.
   # Some Beats, such as Filebeat, ignore the max_retries setting and retry until

filebeat/filebeat.reference.yml

@@ -1880,9 +1880,6 @@ output.elasticsearch:
     # Strategy for fetching the topics metadata from the broker. Default is false.
     #full: false
 
-  # The number of concurrent load-balanced Kafka output workers.
-  #worker: 1
-
   # The number of times to retry publishing an event after a publishing failure.
   # After the specified number of retries, events are typically dropped.
   # Some Beats, such as Filebeat, ignore the max_retries setting and retry until

heartbeat/heartbeat.reference.yml

@@ -893,9 +893,6 @@ output.elasticsearch:
     # Strategy for fetching the topics metadata from the broker. Default is false.
     #full: false
 
-  # The number of concurrent load-balanced Kafka output workers.
-  #worker: 1
-
   # The number of times to retry publishing an event after a publishing failure.
   # After the specified number of retries, events are typically dropped.
   # Some Beats, such as Filebeat, ignore the max_retries setting and retry until

libbeat/_meta/config/output-kafka.reference.yml.tmpl

@@ -64,9 +64,6 @@
     # Strategy for fetching the topics metadata from the broker. Default is false.
     #full: false
 
-  # The number of concurrent load-balanced Kafka output workers.
-  #worker: 1
-
   # The number of times to retry publishing an event after a publishing failure.
   # After the specified number of retries, events are typically dropped.
   # Some Beats, such as Filebeat, ignore the max_retries setting and retry until

metricbeat/metricbeat.reference.yml

@@ -1620,9 +1620,6 @@ output.elasticsearch:
     # Strategy for fetching the topics metadata from the broker. Default is false.
     #full: false
 
-  # The number of concurrent load-balanced Kafka output workers.
-  #worker: 1
-
   # The number of times to retry publishing an event after a publishing failure.
   # After the specified number of retries, events are typically dropped.
   # Some Beats, such as Filebeat, ignore the max_retries setting and retry until

packetbeat/packetbeat.reference.yml

@@ -1248,9 +1248,6 @@ output.elasticsearch:
     # Strategy for fetching the topics metadata from the broker. Default is false.
     #full: false
 
-  # The number of concurrent load-balanced Kafka output workers.
-  #worker: 1
-
   # The number of times to retry publishing an event after a publishing failure.
   # After the specified number of retries, events are typically dropped.
   # Some Beats, such as Filebeat, ignore the max_retries setting and retry until

winlogbeat/winlogbeat.reference.yml

@@ -683,9 +683,6 @@ output.elasticsearch:
     # Strategy for fetching the topics metadata from the broker. Default is false.
     #full: false
 
-  # The number of concurrent load-balanced Kafka output workers.
-  #worker: 1
-
   # The number of times to retry publishing an event after a publishing failure.
   # After the specified number of retries, events are typically dropped.
   # Some Beats, such as Filebeat, ignore the max_retries setting and retry until

x-pack/auditbeat/auditbeat.reference.yml

@@ -803,9 +803,6 @@ output.elasticsearch:
     # Strategy for fetching the topics metadata from the broker. Default is false.
     #full: false
 
-  # The number of concurrent load-balanced Kafka output workers.
-  #worker: 1
-
   # The number of times to retry publishing an event after a publishing failure.
   # After the specified number of retries, events are typically dropped.
   # Some Beats, such as Filebeat, ignore the max_retries setting and retry until

x-pack/filebeat/filebeat.reference.yml

@@ -4209,9 +4209,6 @@ output.elasticsearch:
     # Strategy for fetching the topics metadata from the broker. Default is false.
     #full: false
 
-  # The number of concurrent load-balanced Kafka output workers.
-  #worker: 1
-
   # The number of times to retry publishing an event after a publishing failure.
   # After the specified number of retries, events are typically dropped.
   # Some Beats, such as Filebeat, ignore the max_retries setting and retry until

x-pack/heartbeat/heartbeat.reference.yml

@@ -893,9 +893,6 @@ output.elasticsearch:
     # Strategy for fetching the topics metadata from the broker. Default is false.
     #full: false
 
-  # The number of concurrent load-balanced Kafka output workers.
-  #worker: 1
-
   # The number of times to retry publishing an event after a publishing failure.
   # After the specified number of retries, events are typically dropped.
   # Some Beats, such as Filebeat, ignore the max_retries setting and retry until

x-pack/metricbeat/metricbeat.reference.yml

@@ -2166,9 +2166,6 @@ output.elasticsearch:
     # Strategy for fetching the topics metadata from the broker. Default is false.
     #full: false
 
-  # The number of concurrent load-balanced Kafka output workers.
-  #worker: 1
-
   # The number of times to retry publishing an event after a publishing failure.
   # After the specified number of retries, events are typically dropped.
   # Some Beats, such as Filebeat, ignore the max_retries setting and retry until

x-pack/packetbeat/packetbeat.reference.yml

@@ -1248,9 +1248,6 @@ output.elasticsearch:
     # Strategy for fetching the topics metadata from the broker. Default is false.
     #full: false
 
-  # The number of concurrent load-balanced Kafka output workers.
-  #worker: 1
-
   # The number of times to retry publishing an event after a publishing failure.
   # After the specified number of retries, events are typically dropped.
   # Some Beats, such as Filebeat, ignore the max_retries setting and retry until

x-pack/winlogbeat/winlogbeat.reference.yml

@@ -685,9 +685,6 @@ output.elasticsearch:
     # Strategy for fetching the topics metadata from the broker. Default is false.
     #full: false
 
-  # The number of concurrent load-balanced Kafka output workers.
-  #worker: 1
-
   # The number of times to retry publishing an event after a publishing failure.
   # After the specified number of retries, events are typically dropped.
   # Some Beats, such as Filebeat, ignore the max_retries setting and retry until