Is it possible to git commit files without adding a message or comments?

you can commit with an empty comment but it is not a good practice you should comment your commit so you can know why you made these changes 

here is the code for the empty commit

git commit -a --allow-empty-message -m ''

If you are not destroyer and want to do the things for good purpose, here is what you can use

in your git commit command, 

add parameter “--allow-empty” : No file changes

add parameter “--allow-empty-message”: Empty commit messages

Syntax: 

git commit [-a | --interactive | --patch] [-s] [-v] [-u<mode>] [--amend] [--dry-run] [(-c | -C | --squash) <commit> | --fixup [(amend|reword):]<commit>)] [-F <file> | -m <msg>] [--reset-author] [--allow-empty] [--allow-empty-message] [--no-verify] [-e] [--author=<author>] [--date=<date>] [--cleanup=<mode>] [--[no-]status] [-i | -o] [--pathspec-from-file=<file> [--pathspec-file-nul]] [(--trailer <token>[(=|:)<value>])…] [-S[<keyid>]] [--] [<pathspec>…]

Try below command to achieve your task,

git commit -a --allow-empty --allow-empty-message

Reference:  the online documentation.