When I became a glock armorer, the instructor told us that it is used for initial break in and not to clean it prior to first firing. I do recommend that you at lease run a bore snake through the barrel in case there is any crap in there from shipping.
Do whatever makes you feel good. It won't make a difference in the end.
I’ve never cleaned my G17, ever. Shoots better now then when I bought it.
Just clean the barrel. Shoot several hundred rnds till factory grease was gone; clean and relube.