Revert "bt: Update to AU199 proprietary drop"

This reverts commit 9b4ae95769c680b7f294410a4088e0ab8de1686c.
diff --git a/msm8996/libbt-vendor/src/bt_vendor_qcom.c b/msm8996/libbt-vendor/src/bt_vendor_qcom.c
index 56a1552..a905450 100644
--- a/msm8996/libbt-vendor/src/bt_vendor_qcom.c
+++ b/msm8996/libbt-vendor/src/bt_vendor_qcom.c
@@ -695,12 +695,7 @@
                     case BT_SOC_AR3K:
                         /* BT Chipset Power Control through Device Tree Node */
                         if(!pthread_mutex_lock(&m_lock)) {
-                            if(nState == BT_VND_PWR_ON && property_get_bool("wc_transport.vnd_power", 0)) {
-                                bt_powerup(BT_VND_PWR_OFF);
-                            }
                             retval = bt_powerup(nState);
-                            if(retval == 0)
-                                property_set("wc_transport.vnd_power", nState == BT_VND_PWR_ON ? "1" : "0");
                             pthread_mutex_unlock(&m_lock);
                         }
                     default: