chore: fix integration tests

Author: lqiu96

java-datastore/google-cloud-datastore/src/test/java/com/google/cloud/datastore/testing/ITLocalDatastoreHelperTest.java

@@ -24,7 +24,6 @@
 import static org.junit.Assert.assertSame;
 import static org.junit.Assert.assertTrue;
 
-import com.google.api.gax.grpc.InstantiatingGrpcChannelProvider;
 import com.google.cloud.NoCredentials;
 import com.google.cloud.datastore.Datastore;
 import com.google.cloud.datastore.DatastoreException;
@@ -180,17 +179,15 @@ public void testOptions() {
   public void testDefaultHttpTransportOptions() {
     LocalDatastoreHelper helper = LocalDatastoreHelper.create();
     DatastoreOptions options = helper.getOptions();
-    assertThat(options.getTransportOptions()).isInstanceOf(HttpTransportOptions.class);
+    assertThat(options.getTransportOptions()).isInstanceOf(GrpcTransportOptions.class);
   }
 
   @Test
-  public void testSetGrpcTransportOptions() {
+  public void testSetHttpTransportOptions() {
     LocalDatastoreHelper helper = LocalDatastoreHelper.create();
-    DatastoreOptions options =
-        helper.getGrpcTransportOptions(GrpcTransportOptions.newBuilder().build());
-    assertThat(options.getTransportOptions()).isInstanceOf(GrpcTransportOptions.class);
-    assertThat(options.getTransportChannelProvider())
-        .isInstanceOf(InstantiatingGrpcChannelProvider.class);
+    DatastoreOptions options = helper.getOptions();
+    assertThat(options.getTransportOptions()).isInstanceOf(HttpTransportOptions.class);
+    assertNull(options.getTransportChannelProvider());
   }
 
   @Test