Delete all the data of BBPress

I would like to delete all the data related to bbPress WordPress, some how millions of records are inserted into my blog and i will use this query to delete the records

DELETE from wp_btei_postmeta 
where 
Post_id IN (select distinct ID from wp_btei_posts where post_type in ('forum', 'topic', 'reply')) 

I want to know is this the right thing I am doing ? Will it delete other data than my forum ? because i read on BBPress that they use the above three types of post and uses the main post table only.