8285263: Minor cleanup could be done in java.security

Reviewed-by: weijun

src/java.base/share/classes/java/security/PrivateKey.java

@@ -70,5 +70,5 @@ public interface PrivateKey extends Key, javax.security.auth.Destroyable {
     @Deprecated
     @SuppressWarnings("serial")
     @java.io.Serial
-    static final long serialVersionUID = 6034044314589513430L;
+    long serialVersionUID = 6034044314589513430L;
 }