Remove workarounds unsetting map content inset when setting map camera

[1ec5]

#2211 worked around mapbox/mapbox-gl-native#15233 by adjusting the map’s content inset instead of its safe area, disabling automaticallyAdjustsScrollViewInsets in route overview mode, and zeroing out the content inset before calling cameraThatFitsShape(_:direction:edgePadding:) or camera(_:fitting:edgePadding:). Once mapbox/mapbox-gl-native#15233 is fixed, these workarounds should be removed so that we can take advantage of the map SDK’s built-in edge padding option distinct from the content inset option.

/ref #2145
/cc @mapbox/navigation-ios @astojilj @fabian-guerra

[1ec5]

The relevant map SDK APIs have been rewritten as part of map SDK v10.0.0.