chore(cm): remove needless logs

src/emqx_channel.erl

@@ -946,7 +946,10 @@ handle_info({sock_closed, Reason}, Channel =
     end;
 
 handle_info({sock_closed, Reason}, Channel = #channel{conn_state = disconnected}) ->
-    ?LOG(error, "Unexpected sock_closed: ~p", [Reason]),
+    %% Since sock_closed messages can be generated multiple times,
+    %% we can simply ignore errors of this type in the disconnected state.
+    %% e.g. when the socket send function returns an error, there is already
+    %% a tcp_closed delivered to the process mailbox
     {ok, Channel};
 
 handle_info(clean_acl_cache, Channel) ->

src/emqx_connection.erl

@@ -685,7 +685,10 @@ handle_info(activate_socket, State = #state{sockstate = OldSst}) ->
     end;
 
 handle_info({sock_error, Reason}, State) ->
-    Reason =/= closed andalso ?LOG(error, "Socket error: ~p", [Reason]),
+    case Reason =/= closed andalso Reason =/= einval of
+        true -> ?LOG(warning, "socket_error: ~p", [Reason]);
+        false -> ok
+    end,
     handle_info({sock_closed, Reason}, close_socket(State));
 
 handle_info(Info, State) ->