is it possible to delete files of format “.wp-toolkit xxx”

plugin
https://wordpress.org/support/plugin/w3-total-cache/reviews/
filled the entire limit of descriptors, and created a bunch of files, a lot of files in the .wp-toolkit_ format take up a lot of descriptors, these files can be deleted, what do they affect?

Сторінка, з якою мені потрібна допомога: [увійдіть щоб побачити посилання]