remove zoneWithContext

Author: blakeroberts-wk

lib/api.dart

@@ -12,8 +12,7 @@ export 'src/api/context/context.dart'
         contextWithSpanContext,
         spanContextFromContext,
         spanFromContext,
-        zone,
-        zoneWithContext;
+        zone;
 export 'src/api/context/context_manager.dart'
     show globalContextManager, registerGlobalContextManager;
 export 'src/api/exporters/span_exporter.dart' show SpanExporter;

lib/src/api/context/context.dart

@@ -53,10 +53,6 @@ SpanContext spanContextFromContext(Context context) {
   return spanFromContext(context).spanContext;
 }
 
-@experimental
-@Deprecated('This method will be removed in 0.19.0. Use [zone] instead.')
-Zone zoneWithContext(Context context) => zone(context);
-
 /// Returns a new [Zone] such that the given context will be automatically
 /// attached and detached for any function that runs within the zone.
 @experimental