Revert "Add read_channel_content permission (#24018)" (#24114)

This reverts commit a19ce047ba.

server/channels/api4/reaction.go

@@ -57,8 +57,8 @@ func getReactions(c *Context, w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	if !c.App.SessionHasPermissionToChannelByPost(*c.AppContext.Session(), c.Params.PostId, model.PermissionReadChannelContent) {
-		c.SetPermissionError(model.PermissionReadChannelContent)
+	if !c.App.SessionHasPermissionToChannelByPost(*c.AppContext.Session(), c.Params.PostId, model.PermissionReadChannel) {
+		c.SetPermissionError(model.PermissionReadChannel)
 		return
 	}
 
@@ -121,8 +121,8 @@ func deleteReaction(c *Context, w http.ResponseWriter, r *http.Request) {
 func getBulkReactions(c *Context, w http.ResponseWriter, r *http.Request) {
 	postIds := model.ArrayFromJSON(r.Body)
 	for _, postId := range postIds {
-		if !c.App.SessionHasPermissionToChannelByPost(*c.AppContext.Session(), postId, model.PermissionReadChannelContent) {
-			c.SetPermissionError(model.PermissionReadChannelContent)
+		if !c.App.SessionHasPermissionToChannelByPost(*c.AppContext.Session(), postId, model.PermissionReadChannel) {
+			c.SetPermissionError(model.PermissionReadChannel)
 			return
 		}
 	}