CI: Remove python.version=2.7 from test pipeline

* REASON: No longer supported by Github Actions (date: 2023-07)

OTHERWISE:

* .envrc.use_venv: Now used by default
  RENAMED FROM: .envrc.use_venv.disabled

.github/workflows/tests.yml

@@ -33,13 +33,9 @@ jobs:
       fail-fast: false
       matrix:
         # PREPARED: os: [ubuntu-latest, macos-latest, windows-latest]
-        # PREPARED: python-version: ['3.9', '2.7', '3.10', '3.8', 'pypy-2.7', 'pypy-3.8']
-        # PREPARED: os: [ubuntu-latest, windows-latest]
+        # PREPARED: python-version: ["3.11", "3.10", "3.9", "3.8", "pypy-3.10"]
         os: [ubuntu-latest]
-        python-version: ["3.11", "3.10", "3.9", "2.7"]
-        exclude:
-          - os: windows-latest
-            python-version: "2.7"
+        python-version: ["3.11", "3.10", "3.9"]
     steps:
       - uses: actions/checkout@v3
       # DISABLED: name: Setup Python ${{ matrix.python-version }} on platform=${{ matrix.os }}

.gitignore

@@ -25,8 +25,6 @@ tools/virtualenvs
 .venv*/
 .vscode/
 .done.*
-.envrc.use_venv
-.envrc.use_pep0582
 .DS_Store
 .coverage
 rerun.txt

CHANGES.rst

@@ -52,6 +52,8 @@ DEVELOPMENT:
 
 * Renamed default branch of Git repository to "main" (was: "master").
 * Use github-actions as CI/CD pipeline (and remove Travis as CI).
+* CI: Remove python.version=2.7 for CI pipeline
+  (reason: No longer supported by Github Actions, date: 2023-07).
 
 CLEANUPS: