fix warning on configureawait

Author: John Campion Jr

tests/MongoFramework.AspNetCore.Identity.Tests/MongoUserStoreTests/FindByLogin.cs

@@ -64,7 +64,7 @@ public async Task GetsLoginWithUserIdAndProvider()
             var context = new TestContext(GetConnection());
             var store = new TestStore(context);
 
-            var login = await store.ExposeFindUserLoginAsync(TestIds.UserId1, "provider2", "provider-key").ConfigureAwait(false);
+            var login = await store.ExposeFindUserLoginAsync(TestIds.UserId1, "provider2", "provider-key");
 
             login.Should().NotBeNull();
             login.UserId.Should().Be(TestIds.UserId1);