chore(python): remove dead helpers and a stale dependency

None of these had a caller:
- pkgman: is_supported_path, extract_zip, cleanup and set_version, left over
  from the single-directory install. cleanup() would have deleted every
  installed browser version.
- multiversion.get_cached_repo_names, CONSTRAINTS.as_range,
  fingerprints._load_os_voices, utils._clean_locals, and unused imports.

Also:
- The "Apify Fingerprints" row in `camoufox version`, which has read "?"
  since fpgen replaced BrowserForge.
- lxml is no longer a dependency; nothing imports it.
- The geoip extra now names maxminddb, the module geolocation.py actually
  imports, rather than getting it transitively through geoip2.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

pythonlib/pyproject.toml

@@ -45,15 +45,14 @@ numpy = "*"
 ua_parser = "*"
 typing_extensions = "*"
 screeninfo = "*"
-lxml = "*"
 language-tags = "*"
 pysocks = "*"
 inquirer = "*"
-geoip2 = {version = "*", optional = true}
+maxminddb = {version = "*", optional = true}
 PySide6 = {version = "*", optional = true}
 
 [tool.poetry.extras]
-geoip = ["geoip2"]
+geoip = ["maxminddb"]
 gui = ["PySide6"]
 
 [tool.poetry.scripts]