[HACK] Remove pytest-subtests from CI workflows

pytest-subtests breaks output capture from unittest-style subtests.
Disable it for now to get error output.

Bug: pytest-dev/pytest-subtests#26

Author: mgorny

.github/workflows/cygwin.yml

@@ -87,7 +87,7 @@ jobs:
       - name: Run pip
         run: |
           export PATH=/usr/bin:/usr/local/bin:$(cygpath ${SYSTEMROOT})/system32
-          python3 -m pip --disable-pip-version-check install gcovr fastjsonschema pefile pytest pytest-subtests pytest-xdist
+          python3 -m pip --disable-pip-version-check install gcovr fastjsonschema pefile pytest pytest-xdist
         shell: C:\cygwin\bin\bash.exe --noprofile --norc -o igncr -eo pipefail '{0}'
 
       - uses: actions/cache/save@v4

.github/workflows/macos.yml

@@ -35,7 +35,7 @@ jobs:
     - run: |
         export PATH="$HOME/Library/Python/3.9/bin:$PATH"
         /usr/bin/python3 -m pip install --upgrade pip
-        /usr/bin/python3 -m pip install pytest pytest-xdist pytest-subtests fastjsonschema
+        /usr/bin/python3 -m pip install pytest pytest-xdist fastjsonschema
     - run: brew install pkg-config ninja llvm qt@5
     - env:
         CPPFLAGS: "-I/opt/homebrew/include"

.github/workflows/msys2.yml

@@ -90,7 +90,7 @@ jobs:
 
       - name: Install dependencies
         run: |
-          python3 -m pip --disable-pip-version-check install gcovr pefile pytest pytest-subtests pytest-xdist
+          python3 -m pip --disable-pip-version-check install gcovr pefile pytest pytest-xdist
 
       - name: Install pypy3 on x86_64
         run: |

ci/ciimage/common.sh

@@ -13,7 +13,6 @@ set -x
 base_python_pkgs=(
   pytest
   pytest-xdist
-  pytest-subtests
   coverage
   fastjsonschema
 )

ci/run.ps1

@@ -92,7 +92,7 @@ python --version
 
 # Needed for running unit tests in parallel.
 echo ""
-python -m pip --disable-pip-version-check install --upgrade pefile pytest-xdist pytest-subtests fastjsonschema 
+python -m pip --disable-pip-version-check install --upgrade pefile pytest-xdist fastjsonschema 
 
 # Needed for running the Cython tests
 python -m pip --disable-pip-version-check install cython