.\vcpkg.exe remove boost-vcpkg-helpers --recurse
if you have powershell, you can conjure up something like this:
vcpkg list | % { $_.Split(" ") | Select-Object -first 1 } | Where-Object { $_ -like "*:x86-windows" } | ForEach-Object -Process { vcpkg remove --recurse $_ }
vcpkg remove boost-vcpkg-helpers --recurse
.\vcpkg.exe remove boost-uninstall --recurse
Removing packages using a pattern or regular expression · Issue #8486 · microsoft/vcpkg (github.com)