Revert "Adding the debug bar logic in the server (#22410)" (#22478)

This reverts commit 280bc7f97e.

model/debugbar.go

@@ -1,28 +0,0 @@
-// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
-// See LICENSE.txt for license information.
-
-package model
-
-import "runtime"
-
-type DebugBarInfo struct {
-	ServerOS             string
-	ServerArchitecture   string
-	ServerVersion        string
-	BuildHash            string
-	DatabaseType         string
-	DatabaseVersion      string
-	LdapVendorName       string
-	LdapVendorVersion    string
-	ElasticServerVersion string
-	ElasticServerPlugins []string
-	WebSocketConnections int
-	MasterDBConnections  int
-	ReadDBConnections    int
-	SessionsCount        int64
-	Goroutines           int
-	Cpus                 int
-	CgoCalls             int64
-	GoVersion            string
-	GoMemStats           runtime.MemStats
-}