Remove unused changed argument from BlueZManager._run_advertisement_callbacks

[bdraco]

• If the pull request adds functionality, the docs should be updated.
• Modify the CHANGELOG.rst, describing your changes as is specified by the
  guidelines in that document.
• The pull request should work for Python 3.8+ on the following platforms:
  • Windows 10, version 16299 (Fall Creators Update) and greater
  • Linux distributions with BlueZ >= 5.43
  • OS X / macOS >= 10.11
• Squash all your commits on your PR branch, if the commits are not solving
  different problems and you are committing them in the same PR. In that case,
  consider making several PRs instead.
• Feel free to add your name as a contributor to the AUTHORS.rst file!

[bdraco]

Not sure if this warrants a CHANGELOG entry since its an internal code cleanup and there is no user facing change or effect

[dlech]

looks good, thanks

[bdraco]

Thanks