Remove unnecessary package refs

Author: tmat

Directory.Packages.props

@@ -29,7 +29,6 @@
     <PackageVersion Include="Microsoft.VisualStudioEng.MicroBuild.Core"                              Version="1.0.0" />
     <PackageVersion Include="Nerdbank.GitVersioning"                                                 Version="3.6.79-alpha" />
     <PackageVersion Include="Nerdbank.Streams"                                                       Version="2.12.87" />
-    <PackageVersion Include="System.IO.Pipelines"                                                    Version="9.0.0" />
     <PackageVersion Include="StreamJsonRpc"                                                          Version="2.23.32-alpha" />
     <PackageVersion Include="Microsoft.Extensions.Logging.Abstractions"                              Version="9.0.0" />
     <PackageVersion Include="Microsoft.DotNet.HotReload.Agent"                                       Version="$(MicrosoftDotNetHotReloadPackageVersion)"/>
@@ -72,8 +71,6 @@
     <PackageVersion Include="Microsoft.VisualStudio.Validation"                                      Version="17.8.8" />
     <PackageVersion Include="Microsoft.VisualStudio.XmlEditor"                                       Version="17.13.0-preview-1-35408-014" />
     <PackageVersion Include="Microsoft.VSSDK.BuildTools"                                             Version="18.0.136-preview1" />
-    <PackageVersion Include="System.Threading.Tasks.Dataflow"                                        Version="9.0.0" />
-    <PackageVersion Include="System.Formats.Asn1"                                                    Version="8.0.1" />
     <PackageVersion Include="Microsoft.VSDesigner"                                                   Version="18.0.1755-preview.1" />
     <PackageVersion Include="VsWebSite.Interop"                                                      Version="18.0.1755-preview.1" />
 
@@ -90,7 +87,6 @@
     <!-- Roslyn -->
     <PackageVersion Include="Microsoft.CodeAnalysis"                                                 Version="5.0.0-1.25321.102" />
     <PackageVersion Include="Microsoft.CodeAnalysis.Common"                                          Version="5.0.0-1.25321.102" />
-    <PackageVersion Include="Microsoft.CSharp"                                                       Version="4.7.0" />
     <PackageVersion Include="Microsoft.Net.Compilers.Toolset"                                        Version="5.0.0-1.25321.102" />
     <PackageVersion Include="Microsoft.VisualStudio.LanguageServices"                                Version="5.0.0-1.25321.102" />
 
@@ -106,8 +102,6 @@
 
     <!-- Framework packages -->
     <PackageVersion Include="Microsoft.IO.Redist"                                                    Version="6.1.0" />
-    <!-- Pin version to avoid CVE in System.Text.Json 8.0.4 -->
-    <PackageVersion Include="System.Text.Json"                                                       Version="9.0.0" />
 
     <!-- MSBuild (for tests only) -->
     <PackageVersion Include="Microsoft.Build"                                                        Version="17.13.0-preview-24504-04" />

eng/imports/HostAgnostic.props

@@ -26,18 +26,15 @@
     <PackageReference Include="Microsoft.VisualStudio.ProjectSystem.XamlTypes" Condition="'$(TargetFramework)' == '$(NetCoreTargetFramework)'" />
     <PackageReference Include="Microsoft.VisualStudio.Threading" />
     <PackageReference Include="Microsoft.VisualStudio.Validation" />
-    <PackageReference Include="System.Threading.Tasks.Dataflow" />
 
     <PackageReference Include="Microsoft.IO.Redist" Condition="'$(TargetFramework)' == 'net472'" />
-    <PackageReference Include="System.Text.Json" />
 
     <!-- VS MEF -->
     <PackageReference Include="Microsoft.VisualStudio.Composition" />
 
     <PackageReference Include="MessagePack" />
 
     <!-- Roslyn -->
-    <PackageReference Include="Microsoft.CSharp" />
     <PackageReference Include="Microsoft.CodeAnalysis" />
 
     <!-- Needed to tie-break a potentially misspecified dependency somewhere -->

src/Microsoft.VisualStudio.ProjectSystem.Managed/Microsoft.VisualStudio.ProjectSystem.Managed.csproj

@@ -58,7 +58,6 @@
     <!-- Path property: PkgMicrosoft_CodeAnalysis_Common -->
     <!-- The path is needed so we can copy the runtime assembly into the NPM package. -->
     <PackageReference Include="Microsoft.CodeAnalysis.Common" GeneratePathProperty="true" />
-    <PackageReference Include="System.Formats.Asn1" />
     <PackageReference Include="Microsoft.VisualStudio.Debugger.Contracts" />
     <PackageReference Include="Microsoft.VisualStudio.HotReload.Components" />
   </ItemGroup>

tests/Microsoft.VisualStudio.ProjectSystem.Managed.UnitTests/Microsoft.VisualStudio.ProjectSystem.Managed.UnitTests.csproj

@@ -35,10 +35,6 @@
     <Compile Remove="Mocks\IProjectImageProviderFactory.cs" />
   </ItemGroup>
 
-  <ItemGroup>
-    <PackageReference Include="System.Formats.Asn1" />
-  </ItemGroup>
-
   <ItemGroup>
     <InternalsVisibleTo Include="Microsoft.VisualStudio.ProjectSystem.Managed.VS.UnitTests" />
   </ItemGroup>

tests/Microsoft.VisualStudio.ProjectSystem.Managed.VS.UnitTests/Microsoft.VisualStudio.ProjectSystem.Managed.VS.UnitTests.csproj

@@ -18,8 +18,6 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.Build" />
     <PackageReference Include="Microsoft.Deployment.DotNet.Releases" PrivateAssets="all" />
-    <!-- for unit testing System.Text.Json Parsing in retarget handler-->
-    <PackageReference Update="System.IO.Pipelines" ExcludeAssets="none" />
   </ItemGroup>
 
 </Project>