MM-8708 Remove api package (#8784)

* Remove api package

* Remove api dependency from cmd package

* Remove EnableAPIv3 setting

* Update web tests

* Add more websocket tests

* Move some ws and oauth tests to api4 package

* Move command tests into api4 package

* Test fixes

* Fix msg command test

* Add some app file tests

utils/config.go

@@ -448,7 +448,6 @@ func GenerateClientConfig(c *model.Config, diagnosticId string, license *model.L
 	props["WebsocketURL"] = strings.TrimRight(*c.ServiceSettings.WebsocketURL, "/")
 	props["SiteName"] = c.TeamSettings.SiteName
 	props["EnableTeamCreation"] = strconv.FormatBool(*c.TeamSettings.EnableTeamCreation)
-	props["EnableAPIv3"] = strconv.FormatBool(*c.ServiceSettings.EnableAPIv3)
 	props["EnableUserCreation"] = strconv.FormatBool(c.TeamSettings.EnableUserCreation)
 	props["EnableOpenServer"] = strconv.FormatBool(*c.TeamSettings.EnableOpenServer)
 	props["RestrictDirectMessage"] = *c.TeamSettings.RestrictDirectMessage