I really like Bookdown. I have one issue that is causing more work than I think is required.

When I build a book from the rmd files, is there a way to prevent lines from being added to my html files?

The reason I want to do this is the following:

1. I have many html files with my book. One for each subsection.
2. I have a local repo on two computers.
3. Any time I make a change to one rmd file, all of my html files get changed. Often the only thing that changes is the meta line that lists the date last edited, for example:
   from repo 1 :
   from repo 2 :
4. Before I can push the new html (linked to netlify website), I need to merge the minor date changes for every html file. If I do this through rstudio, I commit these changes one at a time. I am not using this information, so merging is a waste of effort, especially when I have more than 100 html files to merge.
5. If the date meta line is not generated, only a small set of html needs to be merged when I make a change to one rmd file.

Is there a simple solution to achieving this?