Remove zeroed sockets_used/sockets_total

Values are zeroed following 4.x changes.

Author: lhoguin

Source/EasyNetQ.Management.Client.ApprovalTests/EasyNetQ.Management.Client.approved.txt

@@ -988,8 +988,6 @@ namespace EasyNetQ.Management.Client.Model
                     long MemCode,
                     long FdUsed,
                     long FdTotal,
-                    long SocketsUsed,
-                    long SocketsTotal,
                     long MemUsed,
                     long MemLimit,
                     bool MemAlarm,
@@ -1031,8 +1029,6 @@ namespace EasyNetQ.Management.Client.Model
         public long Processors { get; init; }
         public long RunQueue { get; init; }
         public bool Running { get; init; }
-        public long SocketsTotal { get; init; }
-        public long SocketsUsed { get; init; }
         public string Type { get; init; }
         public long Uptime { get; init; }
     }

Source/EasyNetQ.Management.Client.Tests/Json/Nodes.json

@@ -16,8 +16,6 @@
     "mem_code": 18006918,
     "fd_used": 42,
     "fd_total": 1024,
-    "sockets_used": 2,
-    "sockets_total": 829,
     "mem_used": 37360256,
     "mem_limit": 3405386547,
     "mem_alarm": false,

Source/EasyNetQ.Management.Client/Model/Node.cs

@@ -15,8 +15,6 @@ public record Node(
     long MemCode,
     long FdUsed,
     long FdTotal,
-    long SocketsUsed,
-    long SocketsTotal,
     long MemUsed,
     long MemLimit,
     bool MemAlarm,