Merge pull request #102 from tappeddev/remove-duplicate-location-data-source-cleanup

remove redundant call to stopLocationDataSource in ArcgisMapView dein…

Author: TarekTolba1

arcgis_map_sdk_ios/ios/arcgis_map_sdk_ios/Sources/arcgis_map_sdk_ios/ArcgisMapView.swift

@@ -622,7 +622,6 @@ class ArcgisMapView: NSObject, FlutterPlatformView {
         mapContentView.viewModel.onLoadStatusChanged = nil
         mapContentView.viewModel.onViewInit = nil
         mapContentView.viewModel.mapViewProxy = nil
-        mapContentView.viewModel.stopLocationDataSource()
 
         zoomEventChannel.setStreamHandler(nil)
         centerPositionEventChannel.setStreamHandler(nil)