fetch_configlet: update, and remove duplicate script

[ee7]

Commit eff52e6 "Update bin/fetch-configlet script" added a new up-to-date fetch script, rather than modifying the existing one.

Remove the new script, and update the old one with the same upstream changes:

• 3815d7a fetch-configlet: allow running from the bin directory
• d304fa5 fetch-configlet: add comment with upstream location
• 9c69c4d fetch-configlet: remove a hard line wrap
• 3b4b009 fetch-configlet: improve style slightly

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Follow-up from #1217.

Alternatively, we could also remove the .sh script instead. But if we prefer the extensionless name, maybe it's better to merge this PR first, then remove all .sh from scripts in this repo as a follow-up PR.

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[kytrinyx]

Alternatively, we could also remove the .sh script instead. But if we prefer the extensionless name, maybe it's better to merge this PR first, then remove all .sh from scripts in this repo as a follow-up PR.

I would prefer the fetch-configlet script to be the same across all repositories. I will be adding it to the org-wide-files repository shortly. (I should have done that before making all these PRs; it didn't occur to me).

I don't feel strongly about having the script be extensionless, though. That's just an artifact of an earlier choice that I made without having strong feelings about the options.

[kytrinyx]

I'm fine with merging this and then changing the extensions in a follow-on PR, if that is the outcome of the discussion.

[ee7]

I will be adding it to the org-wide-files repository shortly.

Sounds good to me. I think we intended to get around to doing that.

If we change the filename in this repo (which we would do if we add this file to org-wide-files) we should remember to update the filename in CODEOWNERS:

elixir/.github/CODEOWNERS

Lines 4 to 5 in eff52e6

	# Changes to `fetch-configlet` should be made in the `exercism/configlet` repo
	bin/fetch_configlet.sh @exercism/maintainers-admin

[jiegillet]

OK then, I'll merge this and expect a follow up PR with a name change (I do have a slight preference for having an extension).
Thank you.