fix: Set the transport of grafeas back to grpc only

PiperOrigin-RevId: 457789598

grafeas/v1/BUILD.bazel

@@ -155,7 +155,7 @@ java_gapic_library(
     test_deps = [
         ":grafeas_java_grpc",
     ],
-    transport = "grpc+rest",
+    transport = "grpc",
     deps = [
         ":common_proto",
         ":grafeas_java_proto",
@@ -166,7 +166,6 @@ java_gapic_library(
 java_gapic_test(
     name = "grafeas_java_gapic_test_suite",
     test_classes = [
-        "io.grafeas.v1.GrafeasClientHttpJsonTest",
         "io.grafeas.v1.GrafeasClientTest",
     ],
     runtime_deps = [
@@ -178,7 +177,7 @@ java_gapic_test(
 # Open Source Packages
 java_gapic_assembly_gradle_pkg(
     name = "google-cloud-grafeas-v1-java",
-    transport = "grpc+rest",
+    transport = "grpc",
     deps = [
         ":grafeas_java_gapic",
         ":grafeas_java_grpc",
@@ -223,7 +222,7 @@ go_gapic_library(
     importpath = "cloud.google.com/go/grafeas/apiv1;grafeas",
     metadata = True,
     service_yaml = "//grafeas:grafeas_v1.yaml",
-    transport = "grpc+rest",
+    transport = "grpc",
     deps = [
         ":grafeas_go_proto",
     ],