Merge branch 'bugfix/fix_ble_app_unregister_no_event_4.3' into 'release/v4.3'

fix(bt/bluedroid): Fix ble app unregister no event(backport v4.3)

See merge request espressif/esp-idf!28172

components/bt/host/bluedroid/bta/gatt/bta_gattc_act.c

@@ -160,7 +160,6 @@ void bta_gattc_disable(tBTA_GATTC_CB *p_cb)
     for (i = 0; i < BTA_GATTC_CL_MAX; i ++) {
         if (p_cb->cl_rcb[i].in_use) {
             p_cb->state = BTA_GATTC_STATE_DISABLING;
-            p_cb->cl_rcb[i].in_use = false;
             /* don't deregister HH GATT IF */
             /* HH GATT IF will be deregistered by bta_hh_le_deregister when disable HH */
 #if (defined BTA_HH_LE_INCLUDED && BTA_HH_LE_INCLUDED == TRUE)