fix: Set the transport of grafeas back to grpc only

src/main/java/io/grafeas/v1/GrafeasClient.java

@@ -18,7 +18,6 @@
 
 import com.google.api.core.ApiFuture;
 import com.google.api.core.ApiFutures;
-import com.google.api.core.BetaApi;
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.paging.AbstractFixedSizeCollection;
 import com.google.api.gax.paging.AbstractPage;
@@ -134,7 +133,6 @@ public static final GrafeasClient create(GrafeasSettings settings) throws IOExce
    * Constructs an instance of GrafeasClient, using the given stub for making calls. This is for
    * advanced usage - prefer using create(GrafeasSettings).
    */
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   public static final GrafeasClient create(GrafeasStub stub) {
     return new GrafeasClient(stub);
   }
@@ -148,7 +146,6 @@ protected GrafeasClient(GrafeasSettings settings) throws IOException {
     this.stub = ((GrafeasStubSettings) settings.getStubSettings()).createStub();
   }
 
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   protected GrafeasClient(GrafeasStub stub) {
     this.settings = null;
     this.stub = stub;
@@ -158,7 +155,6 @@ public final GrafeasSettings getSettings() {
     return settings;
   }
 
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   public GrafeasStub getStub() {
     return stub;
   }

src/main/java/io/grafeas/v1/stub/GrafeasStubSettings.java

@@ -380,7 +380,6 @@ public UnaryCallSettings<UpdateNoteRequest, Note> updateNoteSettings() {
     return listNoteOccurrencesSettings;
   }
 
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   public GrafeasStub createStub() throws IOException {
     if (getTransportChannelProvider()
         .getTransportName()