Remove EXCLUDED_ARCHS entry from pods post_install script

[mmiedlarz]

There is a MapBox issue which forced us to add the following post_install hook to be able to run example app on physical device:

post_install do |installer|
  installer.pods_project.build_configurations.each do |config|
    config.build_settings['EXCLUDED_ARCHS[sdk=iphonesimulator*]'] = 'arm64'
  end
end

The issue here is that it will cause the build to fail on the iOS simulator when compiled on Mac with M1 CPU.
So far it's not a huge problem, but we need to fix it as soon as the MapBox team releases the new framework version.

[QuintinWillison]

Also commented on by me in Slack.

[QuintinWillison]

This issue should end up being obsoleted by #106.

[ben-xD]

This issue should end up being obsoleted by #106.

Closing because I upgraded to mapbox navigation v2.0, tested everything is working without the workarounds (excluded_archs). #152