Revert "fix: sonarQube failure"

This reverts commit ebfacbc.

datasafe-encryption/datasafe-encryption-impl/src/test/java/de/adorsys/datasafe/encrypiton/impl/keystore/KeyStoreServiceTest.java

@@ -26,6 +26,7 @@
 import javax.crypto.SecretKey;
 import java.security.KeyStore;
 import java.security.PrivateKey;
+import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;