Remove DeprecationWarnings filter (VERSION parser)

[ChrisKeefe]

This guy exists to filter out arcane deprecation warnings that pop up in the repeated encoding and decoding on the _VERSION_MATCHER regex. It should be removed, either by handling the encoding/decoding properly, or by factoring out the regex entirely, as Greg has suggested during an unrelated conversation.

[ChrisKeefe]

SO posts that might be releveant/useful:

• https://stackoverflow.com/questions/64598355/unicode-escape-without-deprecation-warning
• https://stackoverflow.com/questions/3939361/remove-specific-characters-from-a-string-in-python