[MM-18391] Removing convert channel endpoint (#18015)

* removing convert endpoint

* fixing translations

Co-authored-by: Benjamin Cooke <benjamincooke@Benjamins-MacBook-Pro.local>

api4/channel.go

@@ -48,7 +48,6 @@ func (api *API) InitChannel() {
 	api.BaseRoutes.Channel.Handle("", api.ApiSessionRequired(getChannel)).Methods("GET")
 	api.BaseRoutes.Channel.Handle("", api.ApiSessionRequired(updateChannel)).Methods("PUT")
 	api.BaseRoutes.Channel.Handle("/patch", api.ApiSessionRequired(patchChannel)).Methods("PUT")
-	api.BaseRoutes.Channel.Handle("/convert", api.ApiSessionRequired(convertChannelToPrivate)).Methods("POST")
 	api.BaseRoutes.Channel.Handle("/privacy", api.ApiSessionRequired(updateChannelPrivacy)).Methods("PUT")
 	api.BaseRoutes.Channel.Handle("/restore", api.ApiSessionRequired(restoreChannel)).Methods("POST")
 	api.BaseRoutes.Channel.Handle("", api.ApiSessionRequired(deleteChannel)).Methods("DELETE")
@@ -228,60 +227,6 @@ func updateChannel(c *Context, w http.ResponseWriter, r *http.Request) {
 	}
 }
 
-func convertChannelToPrivate(c *Context, w http.ResponseWriter, r *http.Request) {
-	c.RequireChannelId()
-	if c.Err != nil {
-		return
-	}
-
-	oldPublicChannel, err := c.App.GetChannel(c.Params.ChannelId)
-	if err != nil {
-		c.Err = err
-		return
-	}
-
-	auditRec := c.MakeAuditRecord("convertChannelToPrivate", audit.Fail)
-	defer c.LogAuditRec(auditRec)
-	auditRec.AddMeta("channel", oldPublicChannel)
-
-	if !c.App.SessionHasPermissionToChannel(*c.AppContext.Session(), c.Params.ChannelId, model.PermissionConvertPublicChannelToPrivate) {
-		c.SetPermissionError(model.PermissionConvertPublicChannelToPrivate)
-		return
-	}
-
-	if oldPublicChannel.Type == model.ChannelTypePrivate {
-		c.Err = model.NewAppError("convertChannelToPrivate", "api.channel.convert_channel_to_private.private_channel_error", nil, "", http.StatusBadRequest)
-		return
-	}
-
-	if oldPublicChannel.Name == model.DefaultChannelName {
-		c.Err = model.NewAppError("convertChannelToPrivate", "api.channel.convert_channel_to_private.default_channel_error", nil, "", http.StatusBadRequest)
-		return
-	}
-
-	user, err := c.App.GetUser(c.AppContext.Session().UserId)
-	if err != nil {
-		c.Err = err
-		return
-	}
-	auditRec.AddMeta("user", user)
-
-	oldPublicChannel.Type = model.ChannelTypePrivate
-
-	rchannel, err := c.App.UpdateChannelPrivacy(c.AppContext, oldPublicChannel, user)
-	if err != nil {
-		c.Err = err
-		return
-	}
-
-	auditRec.Success()
-	c.LogAudit("name=" + rchannel.Name)
-
-	if err := json.NewEncoder(w).Encode(rchannel); err != nil {
-		mlog.Warn("Error while writing response", mlog.Err(err))
-	}
-}
-
 func updateChannelPrivacy(c *Context, w http.ResponseWriter, r *http.Request) {
 	c.RequireChannelId()
 	if c.Err != nil {