Remove section about Vista.

.github/workflows/build.yml

@@ -92,17 +92,6 @@ jobs:
           mt=$(ls -t /c/Program\ Files*/Windows\ Kits/10/bin/*/x64/mt.exe) &&
           test -n "$mt" &&
           echo "${mt%%/mt.exe*}" >>$GITHUB_PATH
-      - name: verify MinVersion=6.0 (to support Vista)
-        shell: bash
-        run: |
-          set -x &&
-          sed '/^\[Setup\]/a\
-          MinVersion=6.0\
-          OutputBaseFilename=mysetup-vista
-          ' <setup.iss >setup-vista.iss &&
-          files/ISCC.exe setup-vista.iss &&
-          mt '-inputresource:Output\mysetup-vista.exe' -out:mysetup-vista.manifest &&
-          cat mysetup-vista.manifest
       - name: verify installer
         shell: bash
         run: |