Revert "Fix version_negotiation_test timing out."

sdk/lib/_internal/pub/test/hosted/version_negotiation_test.dart

Index: sdk/lib/_internal/pub/test/hosted/version_negotiation_test.dart
diff --git a/sdk/lib/_internal/pub/test/hosted/version_negotiation_test.dart b/sdk/lib/_internal/pub/test/hosted/version_negotiation_test.dart
index 5117afe627e99dff779c7688419d325dbc8c186f..64247ea1b453a9d6d05b2a1c995750a03303b7e5 100644
--- a/sdk/lib/_internal/pub/test/hosted/version_negotiation_test.dart
+++ b/sdk/lib/_internal/pub/test/hosted/version_negotiation_test.dart
@@ -54,6 +54,12 @@ main() {
         request.response.close();
       });
 
+      // TODO(nweiz): this shouldn't request the versions twice (issue 11077).
+      server.handle('GET', '/api/packages/foo', (request) {
+        request.response.statusCode = 406;
+        request.response.close();
+      });
+
       pub.shouldExit(1);
 
       expect(pub.remainingStderr(), completion(equals(