net: phylink: clean the pcs_get_state documentation

commit 4d72c3bb ("net: phylink: strip out pre-March 2020 legacy code")
dropped the mac_pcs_get_state ops in phylink_mac_ops in favor of
dedicated PCS operation pcs_get_state. However, the documentation for
the pcs_get_state ops was incorrectly converted and now self-references.

Drop the extra comment.
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

include/linux/phylink.h

@@ -480,9 +480,6 @@ void pcs_disable(struct phylink_pcs *pcs);
  * negotiation completion state in @state->an_complete, and link up state
  * in @state->link. If possible, @state->lp_advertising should also be
  * populated.
- *
- * When present, this overrides pcs_get_state() in &struct
- * phylink_pcs_ops.
  */
 void pcs_get_state(struct phylink_pcs *pcs,
 		   struct phylink_link_state *state);