Remove unused test vectors

Author: vanitasvitae

pg/src/test/java/org/bouncycastle/openpgp/test/Argon2S2KTest.java

@@ -7,17 +7,12 @@
 import java.io.OutputStream;
 import java.security.SecureRandom;
 import java.util.Date;
-import java.util.Iterator;
 
 import org.bouncycastle.bcpg.ArmoredInputStream;
 import org.bouncycastle.bcpg.ArmoredOutputStream;
-import org.bouncycastle.bcpg.BCPGInputStream;
 import org.bouncycastle.bcpg.BCPGOutputStream;
-import org.bouncycastle.bcpg.HashAlgorithmTags;
 import org.bouncycastle.bcpg.S2K;
 import org.bouncycastle.bcpg.SymmetricKeyAlgorithmTags;
-import org.bouncycastle.bcpg.SymmetricKeyEncSessionPacket;
-import org.bouncycastle.crypto.CryptoServicesRegistrar;
 import org.bouncycastle.openpgp.PGPEncryptedDataGenerator;
 import org.bouncycastle.openpgp.PGPEncryptedDataList;
 import org.bouncycastle.openpgp.PGPException;