Revert "Prevent adding Git for Windows mingw64 dir"

This reverts commit cb60e09.

Author: mati865

src/ci/github-actions/jobs.yml

@@ -28,23 +28,14 @@ runners:
 
   - &job-windows
     os: windows-2025
-    env:
-      # Avoid adding Git for Windows /mingw64/bin dir to PATH
-      MSYSTEM: ""
     <<: *base-job
 
   - &job-windows-8c
     os: windows-2025-8core-32gb
-    env:
-      # Avoid adding Git for Windows /mingw64/bin dir to PATH
-      MSYSTEM: ""
     <<: *base-job
 
   - &job-windows-aarch64
     os: windows-11-arm
-    env:
-      # Avoid adding Git for Windows /mingw64/bin dir to PATH
-      MSYSTEM: ""
     <<: *base-job
 
   - &job-aarch64-linux