remove ssh_host_ed25519_key as Vagrant's net-ssh 2.9.1 does not support it

scripts/openssh.ps1

@@ -50,6 +50,10 @@ $sshd_config = $sshd_config -replace 'Banner /etc/banner.txt', '#Banner /etc/ban
 $sshd_config = $sshd_config -replace 'Port 2222', "Port 22"
 Set-Content "C:\Program Files\OpenSSH\etc\sshd_config" $sshd_config
 
+Write-Host "Removing ed25519 key as Vagrant net-ssh 2.9.1 does not support it"
+Remove-Item -Force -ErrorAction SilentlyContinue "C:\Program Files\OpenSSH\etc\ssh_host_ed25519_key"
+Remove-Item -Force -ErrorAction SilentlyContinue "C:\Program Files\OpenSSH\etc\ssh_host_ed25519_key.pub"
+
 # use c:\Windows\Temp as /tmp location
 Write-Output "Setting temp directory location"
 Remove-Item -Recurse -Force -ErrorAction SilentlyContinue "C:\Program Files\OpenSSH\tmp"