message: Remove package-private "withKeystore" method from AndroidKeysetManager.
  This is not used anymore.
diff: @@ -38,7 +38,6 @@ import com.google.protobuf.InvalidProtocolBufferException;
  import java.io.CharConversionException;
  import java.io.IOException;
  import java.security.GeneralSecurityException;
  -import java.security.KeyStore;
  import java.security.KeyStoreException;
  import java.security.ProviderException;
  import javax.annotation.concurrent.GuardedBy;
  @@ -154,7 +153,6 @@ public final class AndroidKeysetManager {
  private Aead masterKey = null;
  private boolean useKeystore = true;
  private KeyTemplate keyTemplate = null;
  - private KeyStore keyStore = null;
  @GuardedBy("this")
  private KeysetManager keysetManager;
  @@ -236,13 +234,6 @@ public final class AndroidKeysetManager {
  return this;
  }
  - /** This is for testing only */
  - @CanIgnoreReturnValue
  - Builder withKeyStore(KeyStore val) {
  - this.keyStore = val;
  - return this;
  - }
  -
  /** Returns the serialized keyset if it exist or null. */
  @Nullable
  @SuppressWarnings("UnusedException")
  @@ -308,12 +299,7 @@ public final class AndroidKeysetManager {
  return null;
  }
  - AndroidKeystoreKmsClient client;
  - if (keyStore != null) {
  - client = new AndroidKeystoreKmsClient.Builder().setKeyStore(keyStore).build();
  - } else {
  - client = new AndroidKeystoreKmsClient();
  - }
  + AndroidKeystoreKmsClient client = new AndroidKeystoreKmsClient();
  boolean generated;
  try {
  