How to clear the database of indexed of file contents?

Using Filerun with Tika and ElasticSearch in Docker, I no longer want to be able to search through contents of files, only through files by filename/metadata.

What command can be used to clear/cleanup the database, removing the indexed file contents from the database? I couldn't find a relevant command here: 

https://docs.filerun.com/command_line_tools

To clear files & paths that no longer exist I use paths_cleanup.php.