Remove unused import

Signed-off-by: Tran Ngoc Nhan <[email protected]>

Author: ngocnhan-tran1996

web/src/main/java/org/springframework/security/web/webauthn/authentication/WebAuthnAuthentication.java

@@ -16,7 +16,6 @@
 
 package org.springframework.security.web.webauthn.authentication;
 
-import java.beans.Transient;
 import java.io.Serial;
 import java.util.Collection;