Remove the completely unused FT parameters in driver association data

It looks like these parameters related to FT have never been used, so
remove them from causing confusion. The separate update_ft_ies()
callback is used to provide the FT elements.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>

src/drivers/driver.h

@@ -891,43 +891,6 @@ struct wpa_driver_associate_params {
 	 */
 	enum mfp_options mgmt_frame_protection;
 
-	/**
-	 * ft_ies - IEEE 802.11r / FT information elements
-	 * If the supplicant is using IEEE 802.11r (FT) and has the needed keys
-	 * for fast transition, this parameter is set to include the IEs that
-	 * are to be sent in the next FT Authentication Request message.
-	 * update_ft_ies() handler is called to update the IEs for further
-	 * FT messages in the sequence.
-	 *
-	 * The driver should use these IEs only if the target AP is advertising
-	 * the same mobility domain as the one included in the MDIE here.
-	 *
-	 * In ap_scan=2 mode, the driver can use these IEs when moving to a new
-	 * AP after the initial association. These IEs can only be used if the
-	 * target AP is advertising support for FT and is using the same MDIE
-	 * and SSID as the current AP.
-	 *
-	 * The driver is responsible for reporting the FT IEs received from the
-	 * AP's response using wpa_supplicant_event() with EVENT_FT_RESPONSE
-	 * type. update_ft_ies() handler will then be called with the FT IEs to
-	 * include in the next frame in the authentication sequence.
-	 */
-	const u8 *ft_ies;
-
-	/**
-	 * ft_ies_len - Length of ft_ies in bytes
-	 */
-	size_t ft_ies_len;
-
-	/**
-	 * ft_md - FT Mobility domain (6 octets) (also included inside ft_ies)
-	 *
-	 * This value is provided to allow the driver interface easier access
-	 * to the current mobility domain. This value is set to %NULL if no
-	 * mobility domain is currently active.
-	 */
-	const u8 *ft_md;
-
 	/**
 	 * passphrase - RSN passphrase for PSK
 	 *