gh: fix native-pwsh as pwsh is already installed on image

Author: xdelaruelle

.github/workflows/windows_tests.yaml

@@ -66,8 +66,6 @@ jobs:
       TCL_INSTALLER: SetupTcl-8.6.13-x64_Bawt-2.3.1
       TCL_DL_URL: http://www.bawt.tcl3d.org/download/Tcl-Pure
       TCLSH_DIR: C:\Tcl\bin
-      PWSH_INSTALLER: PowerShell-7.4.6-win-x64.msi
-      PWSH_DL_URL: https://github.com/PowerShell/PowerShell/releases/download/v7.4.6
       DIST_WIN: modules-*-win
     steps:
       - name: Configure Git autocrlf
@@ -87,11 +85,6 @@ jobs:
         run: |
           curl -LfsS -o %TCL_INSTALLER%.exe %TCL_DL_URL%/%TCL_INSTALLER%.exe
           %TCL_INSTALLER% /verysilent
-      - name: Install Powershell Core under Windows
-        shell: cmd
-        run: |
-          curl -LfsS -o %PWSH_INSTALLER% %PWSH_DL_URL%/%PWSH_INSTALLER%
-          msiexec.exe /package %PWSH_INSTALLER% /quiet ADD_PATH=1
       - name: Configure Git safe.directory
         run: |
           bash -lc 'git config --global --add safe.directory $(cygpath -u "$GITHUB_WORKSPACE")'