Retire EOL'ed python 3.5

Author: Sébastien Delafond

.github/workflows/python.yml

@@ -10,9 +10,6 @@ jobs:
       fail-fast: false
       matrix:
         python-version: ["3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12"]
-        include:
-         - python-version: "3.5"
-           pip-trusted-host: "pypi.python.org pypi.org files.pythonhosted.org"
 
     steps:
       - uses: actions/checkout@v4
@@ -21,8 +18,6 @@ jobs:
         uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
-        env:
-          PIP_TRUSTED_HOST: ${{ matrix.pip-trusted-host }}
 
       - name: Display Python version
         run: python -c "import sys; print(sys.version)"

setup.py

@@ -25,7 +25,6 @@
                 "Programming Language :: Python :: 2",
                 "Programming Language :: Python :: 2.7",
                 "Programming Language :: Python :: 3",
-                "Programming Language :: Python :: 3.5",
                 "Programming Language :: Python :: 3.6",
                 "Programming Language :: Python :: 3.7",
                 "Programming Language :: Python :: 3.8",