Revert "workflows: Downgrade mingw to workaround Windows failure"

This reverts commit 1b6bf22.

Previously we were downgrading mingw to work around an issue in the race
detector in Go on Windows when used with a newer version of GCC. The
issue was first reported here:

golang/go#46099

The issue is reported to be fixed after go 1.19 was released

Author: anjannath

.github/workflows/make-check-win.yml

@@ -16,8 +16,6 @@ jobs:
         go:
           - 1.19
     steps:
-      - name: Downgrade mingw to workaround https://github.com/golang/go/issues/46099
-        run: choco install mingw --version 10.2.0 --allow-downgrade
       - name: Check out repository code
         uses: actions/checkout@v3
       - name: Set up Go