How to completely get rid of replication subscriptions?

I have restored a database in another server. I don’t want any of the transactional subscriptions of the former database. I already called

exec sp_removedbreplication 'MyRestoredDB' 
go

And also

exec sp_cleanupdbreplication
go

And

exec sp_replicationdboption 'MyRestoredDB','Publish','False',1
go

But when I try

truncate table dbo.sample

I get the following error:

Msg 4711, Level 16, State 1, Line 7 Cannot truncate table ‘sample’
because it is published for replication or enabled for Change Data
Capture.

I verified that the database isn’t enabled for CDC. What else I can do to perform the truncate? Delete isn’t an option for reasons not relevant to the question.