Remove remaining uses of sopel.web in core

[dgw]

All remaining core modules that still use sopel.web should be updated to use requests directly instead. I'll be doing this in bits of spare time when I don't feel like working on anything substantial.

Modules I found in my search (and migration status):

• bugzilla
• etymology
• isup
• meetbot (still using quote, which should be replaced or refactored) NAK for now, pending Move sopel.web utilities into sopel.tools #1318
• reddit (using sopel.web.USER_AGENT, which should probably be defined somewhere else) NAK for now, pending Move sopel.web utilities into sopel.tools #1318
• safety
• search
• tld
• translate (imports both requests and sopel.web...because it needs web.decode()) NAK for now, pending Move sopel.web utilities into sopel.tools #1318
• url (uses web.decode() and web.iri_to_uri()) NAK for now, pending Move sopel.web utilities into sopel.tools #1318
• wiktionary (left web.quote() in for now)

[dasu]

isup: web.get is used, but i'm wondering if we should do requests.head instead. Would save on downloading the whole site to get an answer the headers would have provided anyways.

PS: etymology doesn't seem to be working

[dgw]

web didn't have a head method, so switching is totally on the table. (It did and does still, I dunno what file I was reading.)

etymology not working is a separate issue, #1248

[dgw]

Closing this, as everything that was planned has been done. Can be reopened and updated if anything happens with #1318 (or a new tracking issue created for the moved functions).