Fix format violations

Author: JayMaro

core/src/main/java/org/web3j/crypto/Bip44WalletUtils.java

@@ -14,6 +14,7 @@
 
 import java.io.File;
 import java.io.IOException;
+
 import org.web3j.crypto.exception.CipherException;
 
 import static org.web3j.crypto.Bip32ECKeyPair.HARDENED_BIT;