Remove the redirect for mobile-wheels. (#755)

Author: freakboy3742

docs/config.yml

@@ -281,5 +281,3 @@ plugins:
       "bee/sprints.md": "contributing/sprint-guide.md"
       # Historical links of significance
       "community/behavior/code-of-conduct.md": "community/code-of-conduct.md"
-      # Temporary redirect for mobile-wheels until we're back on GH pages hosting
-      "mobile-wheels.md": "https://beeware.github.io/mobile-wheels/"