I'll add a comment on this ticket, but originally this was to localize this fetch.js dependency for when we package things up (which is why I branched off of the pyinstaller branch). The fetch.js script is a polyfill for older browsers that don't have the fetch API, but upon further investigation, this fetch.js script (which is also a really old version) would likely not even work correctly without an additional promise polyfill + we've never had to worry about older browsers like IE 7 before anyway, so I figured I'd just go ahead and remove it.
Ended up being a very small PR.
I'll add a comment on this ticket, but originally this was to localize this fetch.js dependency for when we package things up (which is why I branched off of the pyinstaller branch). The fetch.js script is a polyfill for older browsers that don't have the fetch API, but upon further investigation, this fetch.js script (which is also a really old version) would likely not even work correctly without an additional promise polyfill + we've never had to worry about older browsers like IE 7 before anyway, so I figured I'd just go ahead and remove it.