remove unnecessary changes

Author: jinseopkim0

java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/BigtableInstanceAdminClient.java

@@ -125,7 +125,7 @@
 public final class BigtableInstanceAdminClient implements AutoCloseable {
   private final String projectId;
   private final BigtableInstanceAdminStub stub;
-  private final BigtableInstanceAdminClientV2 baseClient;
+  private final BigtableInstanceAdminClientV2 v2Client;
 
   /** Constructs an instance of BigtableInstanceAdminClient with the given project ID. */
   public static BigtableInstanceAdminClient create(@Nonnull String projectId) throws IOException {
@@ -148,7 +148,7 @@ private BigtableInstanceAdminClient(
       @Nonnull String projectId, @Nonnull BigtableInstanceAdminStub stub) {
     this.projectId = projectId;
     this.stub = stub;
-    this.baseClient = BigtableInstanceAdminClientV2.create(stub);
+    this.v2Client = new BigtableInstanceAdminClientV2(stub);
   }
 
   /** Gets the project ID this client is associated with. */
@@ -161,7 +161,7 @@ public String getProjectId() {
    * methods.
    */
   public BigtableInstanceAdminClientV2 getBaseClient() {
-    return baseClient;
+    return v2Client;
   }
 
   /** Closes the client and frees all resources associated with it (like thread pools). */

java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/BigtableInstanceAdminClientV2.java

@@ -40,9 +40,4 @@ public static final BigtableInstanceAdminClientV2 create(
       BaseBigtableInstanceAdminSettings settings) throws IOException {
     return new BigtableInstanceAdminClientV2(settings);
   }
-
-  /** Constructs an instance of BigtableInstanceAdminClientV2 with the given stub. */
-  public static final BigtableInstanceAdminClientV2 create(BigtableInstanceAdminStub stub) {
-    return new BigtableInstanceAdminClientV2(stub);
-  }
 }

java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/BigtableTableAdminClient.java

@@ -171,7 +171,7 @@ public final class BigtableTableAdminClient implements AutoCloseable {
   private final EnhancedBigtableTableAdminStub stub;
   private final String projectId;
   private final String instanceId;
-  private BigtableTableAdminClientV2 baseClient;
+  private BigtableTableAdminClientV2 v2Client;
 
   /** Constructs an instance of BigtableTableAdminClient with the given project and instance IDs. */
   public static BigtableTableAdminClient create(
@@ -228,7 +228,7 @@ public String getInstanceId() {
    * methods.
    */
   public synchronized BigtableTableAdminClientV2 getBaseClient() {
-    if (baseClient == null) {
+    if (v2Client == null) {
       ScheduledExecutorService backgroundExecutor =
           stub.getSettings().getBackgroundExecutorProvider().getExecutor();
       boolean shouldAutoClose =
@@ -238,15 +238,15 @@ public synchronized BigtableTableAdminClientV2 getBaseClient() {
           BigtableTableAdminClientV2.createAwaitConsistencyCallable(
               stub, stub.getSettings(), stub.getClientContext().getClock(), backgroundExecutor);
 
-      baseClient =
+      v2Client =
           new BigtableTableAdminClientV2(
               stub,
               backgroundExecutor,
               shouldAutoClose,
               awaitConsistencyCallable,
               stub.awaitOptimizeRestoredTableCallable());
     }
-    return baseClient;
+    return v2Client;
   }
 
   @Override