Remove Python v3.3 & v3.4 from CI/CD

[huan]

Because it seems that both the versions are deprecated.

GitHub Actions link

##[error]Version 3.3 with arch x64 not found
##[error]Version 3.4 with arch x64 not found
Available versions:

2.7.17 (x64)
3.5.9 (x64)
3.6.10 (x64)
3.7.6 (x64)
3.8.2 (x64)

Travis CI link

Downloading archive: https://storage.googleapis.com/travis-ci-language-archives/python/binaries/ubuntu/16.04/x86_64/python-3.3.tar.bz2
0.11s$ curl -sSf --retry 5 -o python-3.3.tar.bz2 ${archive_url}
curl: (22) The requested URL returned error: 404 Not Found
Unable to download 3.3 archive. The archive may not exist. Please consider a different version.

[huan]

CI passed again with GitHub Actions.

The first version that automatic deployed is v0.15.dev0, see https://pypi.org/project/pinject/#history