fix: remove buildin dependencies

Author: Corne Bester

pyproject.toml

@@ -4,13 +4,12 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "python_time_functions"
-version = "2.1.2"
+version = "2.2.0"
 description = "Common Python functions for time handling"
+requires-python = ">=3.10"
 readme = "README.md"
 authors = [{name = "Corne Bester", email = "corne.bester@gmail.com"}]
 dependencies = [
-    "datetime",
-    "timezone"
 ]
 license-files = ["LICEN[CS]E*"]