Originally Posted by GoldThreader
So i manually went into my calibre library and deleted books just in the formats I didn't want but Calibre itself still lists them how do I get calibre to not list the formats for the same book?
never do things like that via the back door
To delete a single books format.
Open the metadata editor, select the format(s) to delete and use the 'recycle' icon next to it.
for Multiple books, to remove the same format:
: Right-click the Recycle icon in the Main tool bar: remove files of a specific format.