python setup.py clean does not fully clean up build folder

[another-pjohnson]

Building with

python setup.py install --cpp_ext --cuda_ext

leaves the following artifacts in the build directory:

bdist.linux-x86_64  lib.linux-x86_64-3.10  temp.linux-x86_64-3.10

cleaning the the build with

python setup.py clean

results in the following output:

...
running clean
removing 'build/temp.linux-x86_64-3.10' (and everything under it)

this leaves the following artifacts in the build directory:

bdist.linux-x86_64  lib.linux-x86_64-3.10

I discovered this problem by first building apex with rocm 5.0.2, cleaning apex using python setup.py clean, then re-building with rocm 4.5.2, and discovering that there was an import error when running the following line:

>>> from apex.multi_tensor_apply import multi_tensor_applier
>>> multi_tensor_applier.available
False
>>> multi_tensor_applier.import_err
ImportError('libamdhip64.so.5: cannot open shared object file: No such file or directory')

rocm 4.5.2 has libamdhip64.so.4 and rocm 5.0.2 has libamdhip64.so.5