Revert "ci/msys2: double down on running meson through python3.11"

Python 3.11 will be released soon as default Python package, and
actually python3.11 package already disappeared from the repository.

This reverts commit c637beb522.

.github/workflows/build.yml

@@ -234,9 +234,10 @@ jobs:
             libjpeg-turbo:p
             libplacebo:p
             lua51:p
+            meson:p
             ninja:p
             pkgconf:p
-            python3.11:p
+            python:p
             rst2pdf:p
             rubberband:p
             shaderc:p
@@ -258,7 +259,6 @@ jobs:
       - name: Run meson tests
         id: tests
         run: |
-          source ./venv/bin/activate
           meson test -C build
 
       - name: Print meson test log

ci/build-msys2.sh

@@ -1,8 +1,5 @@
 #!/bin/sh -e
 
-python3.11 -m venv venv
-source ./venv/bin/activate
-python -m pip install meson
 meson setup build            \
   -D cdda=enabled            \
   -D d3d-hwaccel=enabled     \