Revert "libhidlbase supports API level(29)" am: 91b5e43e22 am: 277c9258ac am: 81784bd75d

Original change: https://android-review.googlesource.com/c/platform/system/libhidl/+/1364663

Change-Id: If00a3d75a17589992c0706acb1d9da81febed372