qcacld-3.0: Remove roam_ho_fail member in hdd_adapter

The roam_ho_fail member in the hdd_adapter structure has
no references in the driver so remove this obsolete variable.
The code that previously used this variable was removed by Change-Id:
I2934e4a867458561c50170b0e786e63f20f1af4a

Change-Id: Iedd6359894433f216525a2e447f64fa665ed86e6
CRs-Fixed: 3213513

core/hdd/inc/wlan_hdd_main.h

@@ -1524,12 +1524,6 @@ struct hdd_adapter {
 	ol_txrx_tx_fp tx_fn;
 	/* debugfs entry */
 	struct dentry *debugfs_phy;
-	/*
-	 * Indicate if HO fails during disconnect so that
-	 * disconnect is not initiated by HDD as its already
-	 * initiated by CSR
-	 */
-	bool roam_ho_fail;
 	struct lfr_firmware_status lfr_fw_status;
 	bool con_status;
 	bool dad;