Use overloaded method storePassword instead of a new one

src/test/java/org/cryptomator/common/keychain/MapKeychainAccess.java

@@ -29,11 +29,6 @@ class MapKeychainAccess implements KeychainAccessProvider {
 		map.put(key, pw);
 	}
 
-	@Override
-	public void storePassphraseForAuthenticatedUser(String key, String displayName,CharSequence passphrase) {
-		storePassphrase(key, displayName, passphrase);
-	}
-
 	@Override
 	public char[] loadPassphrase(String key) {
 		return map.get(key);