Removing opentracing (#29965)

* Removing opentracing

* Fixing CI

server/channels/store/store.go

@@ -373,7 +373,6 @@ type PostStore interface {
 	PermanentDeleteByChannel(rctx request.CTX, channelID string) error
 	GetPosts(options model.GetPostsOptions, allowFromCache bool, sanitizeOptions map[string]bool) (*model.PostList, error)
 	GetFlaggedPosts(userID string, offset int, limit int) (*model.PostList, error)
-	// @openTracingParams userID, teamID, offset, limit
 	GetFlaggedPostsForTeam(userID, teamID string, offset int, limit int) (*model.PostList, error)
 	GetFlaggedPostsForChannel(userID, channelID string, offset int, limit int) (*model.PostList, error)
 	GetPostsBefore(options model.GetPostsOptions, sanitizeOptions map[string]bool) (*model.PostList, error)