8255989: Remove explicitly unascribed authorship from Java source files

Reviewed-by: redestad, mr, mchung, iris, serb

src/java.base/share/classes/java/lang/Object.java

@@ -32,7 +32,6 @@ import jdk.internal.vm.annotation.IntrinsicCandidate;
  * Every class has {@code Object} as a superclass. All objects,
  * including arrays, implement the methods of this class.
  *
- * @author  unascribed
  * @see     java.lang.Class
  * @since   1.0
  */