First of all, you can achieve that by turning off all options in the .htaccess Maker and generating the .htaccess file. It reverts to the minimal default Joomla .htaccess.
As for a button, there's a reason I don't want to do that. The problem is that each Joomla version (even each patch release within the same minor release family) may have a slightly different recommended .htaccess file which yet again different than what you read in the (outdated) documentation page. I know that most of the differences are not major, and I know that what I give you as the minimal .htaccess does exactly what Joomla's file is supposed to do (let you use the SEF URLs), but sadly people don't believe in verifiable facts, they believe in voodoo — like, the contents of commented out lines (lines starting with a # sign) making a difference when the very definition of a comment is that it is skipped over without being parsed.
So, instead of making a feature which would get some people's knickers in a twist I opted for the simple solution: you wanna go back to Joomla's .htaccess file? Great! Last time you updated your site, Joomla! wrote an inert htaccess.txt file. Delete your current .htaccess file and copy the htaccess.txt file as .htaccess. Done! This instruction is already in our documentation.
Nicholas K. Dionysopoulos
Lead Developer and Director
🇬🇷Greek: native 🇬🇧English: excellent 🇫🇷French: basic • 🕐 My time zone is Europe / Athens
Please keep in mind my timezone and cultural differences when reading my replies. Thank you!