Removed OneGet support

src/build.ps1

@@ -29,9 +29,6 @@ function Add-Manifest($Manifest, $Binary) {
 
 # Inject version number
 SearchAndReplace $Version Bootstrap\chocolateyInstall.ps1 -PatternLeft '--version=' -PatternRight ' self'
-$AssemblyVersion = $Version.Split("-")[0]
-SearchAndReplace $AssemblyVersion OneGet\provider.manifest -PatternLeft 'version="' -PatternRight '" versionScheme="multipartnumeric"'
-SearchAndReplace $AssemblyVersion OneGet.Bootstrap\0install.psd1 -PatternLeft "ModuleVersion = '" -PatternRight "'"
 
 # Compile source code
 Run-MSBuild /v:Quiet /t:Restore /t:Build /p:Configuration=Release /p:Version=$Version
@@ -46,18 +43,6 @@ dotnet wix build zero-install.wsx -o ..\..\artifacts\Bootstrap\zero-install.msi
 if ($LASTEXITCODE -ne 0) {throw "Exit Code: $LASTEXITCODE"}
 popd
 
-# Generate bootstrap package for PowerShell Gallery (OneGet)
-$env:PATH = "$env:PATH;${env:ProgramFiles(x86)}\Windows Kits\10\bin\x64;${env:ProgramFiles(x86)}\Windows Kits\8.1\bin\x64"
-if (Get-Command mt -ErrorAction SilentlyContinue) {
-    Add-Manifest OneGet\provider.manifest ..\artifacts\Release\net472\ZeroInstall.OneGet.dll
-    Add-Manifest OneGet\provider.manifest OneGet.Bootstrap\bin\Release\net472\0install.dll
-
-    ..\0install.ps1 run --batch https://apps.0install.net/dotnet/nuget.xml pack OneGet.Bootstrap\PowerShell.nuspec -NoPackageAnalysis -Properties Version=$Version -OutputDirectory ..\artifacts
-    move -Force ..\artifacts\0install.$Version.nupkg ..\artifacts\0install.powershell.$Version.nupkg
-} else {
-    Write-Warning "You need mt.exe to build the 0install OneGet provider"
-}
-
 # Generate bootstrap package for Chocolatey
 if (Get-Command choco -ErrorAction SilentlyContinue) {
     choco pack Bootstrap\Chocolatey.nuspec --version $Version --outdir ..\artifacts