CI: Drop old wheel/sdist/archive tests

Author: effigies

.github/workflows/stable.yml

@@ -121,28 +121,6 @@ jobs:
             check: skiptests
             pip-flags: ''
             depends: ''
-          # Check all installation methods
-          - os: ubuntu-latest
-            python-version: "3.10"
-            install: wheel
-            check: test
-            pip-flags: ''
-            depends: REQUIREMENTS
-            optional-depends: DEFAULT_OPT_DEPENDS
-          - os: ubuntu-latest
-            python-version: "3.10"
-            install: sdist
-            check: test
-            pip-flags: ''
-            depends: REQUIREMENTS
-            optional-depends: DEFAULT_OPT_DEPENDS
-          - os: ubuntu-latest
-            python-version: "3.10"
-            install: archive
-            check: test
-            pip-flags: ''
-            depends: REQUIREMENTS
-            optional-depends: DEFAULT_OPT_DEPENDS
         exclude:
           - os: ubuntu-latest
             architecture: x86