fix(ble/bluedroid): Fixed issue with deleting link key when classic Bluetooth is not used

(cherry picked from commit 7c16bce827002efa68c80860e018841133cb4c08)

Co-authored-by: zhanghaipeng <zhanghaipeng@espressif.com>

components/bt/host/bluedroid/stack/btm/btm_devctl.c

@@ -1149,6 +1149,7 @@ tBTM_STATUS BTM_EnableTestMode(void)
 }
 #endif // #if (BLE_HOST_ENABLE_TEST_MODE_EN == TRUE)
 
+#if (CLASSIC_BT_INCLUDED == TRUE)
 /*******************************************************************************
 **
 ** Function         BTM_DeleteStoredLinkKey
@@ -1223,6 +1224,7 @@ void btm_delete_stored_link_key_complete (UINT8 *p)
     }
 }
 
+#endif // (CLASSIC_BT_INCLUDED == TRUE)
 /*******************************************************************************
 **
 ** Function         btm_report_device_status