remove ming64

Author: dfordivam

.github/workflows/bootstrap.yaml

@@ -80,4 +80,6 @@ jobs:
           install-dir: 'c:\cygwin64'
 
       - name: Run bootstrap
-        run: sh ./.github/scripts/bootstrap.sh
+        run: |
+          export PATH=$(echo "$PATH" | sed 's/\/cygdrive\/c\/mingw64\/bin//')
+          sh ./.github/scripts/bootstrap.sh