remove dependency to pytz and dateutil

Author: prauscher

poetry.lock

@@ -66,7 +66,6 @@ flake8-bugbear = "^22.8.23"
 flake8-logging-format = "^0.7.5"
 ipdb = "^0.13.9"
 mypy = "^1.0.0"
-types-python-dateutil = "^2.8.19.6"
 types-setuptools = "^67.2.0.1"
 types-six = "^1.16.21.4"
 types-requests = "^2.28.11.12"

pyproject.toml

@@ -11,7 +11,6 @@
 from cryptography.hazmat.primitives import hashes, serialization
 from cryptography.hazmat.primitives.asymmetric import rsa
 from cryptography.x509.oid import NameOID
-import dateutil.parser
 
 import saml2.cryptography.pki
 

src/saml2/cert.py

@@ -18,8 +18,6 @@
 from urllib import parse
 from uuid import uuid4 as gen_random_key
 
-import dateutil
-
 
 # importlib.resources was introduced in python 3.7
 # files API from importlib.resources introduced in python 3.9
@@ -31,7 +29,6 @@
 from urllib import parse
 
 from cryptography import x509
-import pytz
 
 from saml2 import ExtensionElement
 from saml2 import SamlBase