Remove a few remaining mentions of global prefetch

As suggested in #12454.

Author: michaelklishin

deps/rabbit/src/rabbit_channel.erl

@@ -184,7 +184,6 @@
          acks_uncommitted,
          pending_raft_commands,
          prefetch_count,
-         global_prefetch_count,
          state,
          garbage_collection]).
 
@@ -2272,8 +2271,6 @@ i(pending_raft_commands,   #ch{queue_states = QS}) ->
 i(state,                   #ch{cfg = #conf{state = running}}) -> credit_flow:state();
 i(state,                   #ch{cfg = #conf{state = State}}) -> State;
 i(prefetch_count,          #ch{cfg = #conf{consumer_prefetch = C}})    -> C;
-i(global_prefetch_count, #ch{limiter = Limiter}) ->
-    rabbit_limiter:get_prefetch_limit(Limiter);
 i(interceptors, #ch{interceptor_state = IState}) ->
     IState;
 i(garbage_collection, _State) ->

deps/rabbitmq_cli/lib/rabbitmq/cli/ctl/commands/list_channels_command.ex

@@ -16,7 +16,7 @@ defmodule RabbitMQ.CLI.Ctl.Commands.ListChannelsCommand do
   @info_keys ~w(pid connection name number user vhost transactional
                 confirm consumer_count messages_unacknowledged
                 messages_uncommitted acks_uncommitted messages_unconfirmed
-                prefetch_count global_prefetch_count)a
+                prefetch_count)a
 
   def info_keys(), do: @info_keys
 

deps/rabbitmq_management/priv/www/js/tmpl/channel.ejs

@@ -38,10 +38,6 @@
     <th>Prefetch count</th>
     <td><%= channel.prefetch_count %></td>
   </tr>
-  <tr>
-    <th>Global prefetch count</th>
-    <td><%= channel.global_prefetch_count %></td>
-  </tr>
 </table>
 
 <table class="facts">

deps/rabbitmq_management/priv/www/js/tmpl/channels-list.ejs

@@ -157,9 +157,6 @@
       <% if (channel.prefetch_count != 0) { %>
         <%= channel.prefetch_count %><br/>
       <% } %>
-      <% if (channel.global_prefetch_count != 0) { %>
-        <%= channel.global_prefetch_count %> (global)
-      <% } %>
     </td>
 <% } %>
 <% if (show_column('channels', 'msgs-unacked')) { %>

deps/rabbitmq_prometheus/src/collectors/prometheus_rabbitmq_core_metrics_collector.erl

@@ -169,8 +169,7 @@
         {2, undefined, channel_messages_unconfirmed, gauge, "Published but not yet confirmed messages", messages_unconfirmed},
         {2, undefined, channel_messages_uncommitted, gauge, "Messages received in a transaction but not yet committed", messages_uncommitted},
         {2, undefined, channel_acks_uncommitted, gauge, "Message acknowledgements in a transaction not yet committed", acks_uncommitted},
-        {2, undefined, consumer_prefetch, gauge, "Limit of unacknowledged messages for each consumer", prefetch_count},
-        {2, undefined, channel_prefetch, gauge, "Total limit of unacknowledged messages for all consumers on a channel", global_prefetch_count}
+        {2, undefined, consumer_prefetch, gauge, "Limit of unacknowledged messages for each consumer", prefetch_count}
     ]},
 
     {channel_exchange_metrics, [
@@ -564,20 +563,18 @@ get_data(connection_metrics = Table, false, _) ->
                                     end, empty(Table), Table),
     [{Table, [{recv_cnt, A1}, {send_cnt, A2}, {send_pend, A3}, {channels, A4}]}];
 get_data(channel_metrics = Table, false, _) ->
-    {Table, A1, A2, A3, A4, A5, A6, A7} =
-        ets:foldl(fun({_, Props}, {T, A1, A2, A3, A4, A5, A6, A7}) ->
+    {Table, A1, A2, A3, A4, A5, A6} =
+        ets:foldl(fun({_, Props}, {T, A1, A2, A3, A4, A5, A6}) ->
                           {T,
                            sum(proplists:get_value(consumer_count, Props), A1),
                            sum(proplists:get_value(messages_unacknowledged, Props), A2),
                            sum(proplists:get_value(messages_unconfirmed, Props), A3),
                            sum(proplists:get_value(messages_uncommitted, Props), A4),
                            sum(proplists:get_value(acks_uncommitted, Props), A5),
-                           sum(proplists:get_value(prefetch_count, Props), A6),
-                           sum(proplists:get_value(global_prefetch_count, Props), A7)}
+                           sum(proplists:get_value(prefetch_count, Props), A6)}
                   end, empty(Table), Table),
      [{Table, [{consumer_count, A1}, {messages_unacknowledged, A2}, {messages_unconfirmed, A3},
-               {messages_uncommitted, A4}, {acks_uncommitted, A5}, {prefetch_count, A6},
-               {global_prefetch_count, A7}]}];
+               {messages_uncommitted, A4}, {acks_uncommitted, A5}, {prefetch_count, A6}]}];
 get_data(queue_consumer_count = MF, false, VHostsFilter) ->
     Table = queue_metrics, %% Real table name
     {_, A1} = ets:foldl(fun