[ios] Remove previously deprecated unavailable methods and properties

[friedbunny]

Removes previously deprecated methods and properties that had been marked as unavailable at least a year ago in #11205 (and usually several years ago).

• -[MGLMapView metersPerPixelAtLatitude:]: Meters per point at latitude #3393
• MGLMapView.bundledStyleURLs: Replace bundled styles with mapbox: style URLs #2746
• Paint classes: [core, node, darwin, qt] Remove support for paint classes #8953
• And others.

Also updates some MGLOfflineStorage documentation to use the current key names.

/cc @mapbox/maps-ios

[julianrex]

🎉

[friedbunny]

Here’s what apidiff looks like for these changes...

MGLAccountManager

removed class method: +[MGLAccountManager mapboxMetricsEnabledSettingShownInApp] + undoc

MGLOfflinePackProgressUserInfoKey

removed constant: MGLOfflinePackProgressUserInfoKey + undoc

MGLStyle

removed class method: +[MGLStyle trafficDayStyleURL] + undoc

removed class method: +[MGLStyle trafficDayStyleURLWithVersion:] + undoc

removed class method: +[MGLStyle trafficNightStyleURL] + undoc

removed method: -[MGLStyle addStyleClass:] + undoc

removed class method: +[MGLStyle trafficNightStyleURLWithVersion:] + undoc

removed class method: +[MGLStyle emeraldStyleURL] + undoc

removed property: MGLStyle.localizesLabels + undoc

removed method: -[MGLStyle removeStyleClass:] + undoc

removed class method: +[MGLStyle hybridStyleURL] + undoc

removed method: -[MGLStyle hasStyleClass:] + undoc

removed property: MGLStyle.styleClasses + undoc

MGLOfflinePackMaximumCountUserInfoKey

removed constant: MGLOfflinePackMaximumCountUserInfoKey + undoc

MGLOfflinePackErrorUserInfoKey

removed constant: MGLOfflinePackErrorUserInfoKey + undoc

MGLMapView

removed method: -[MGLMapView addStyleClass:] + undoc

removed property: MGLMapView.styleClasses + undoc

removed method: -[MGLMapView emptyMemoryCache] + undoc

removed method: -[MGLMapView metersPerPixelAtLatitude:] + undoc

removed method: -[MGLMapView hasStyleClass:] + undoc

removed property: MGLMapView.debugActive + undoc

removed property: MGLMapView.bundledStyleURLs + undoc

removed method: -[MGLMapView toggleDebug] + undoc

removed method: -[MGLMapView removeStyleClass:] + undoc

MGLOfflinePackStateUserInfoKey

removed constant: MGLOfflinePackStateUserInfoKey + undoc

[julianrex]

For reference these were marked unavailable in the 4.0.0 release, and ideally would have been removed in 5.0.0.