Remove System.IO.Pipelines package reference.

This is part of the framework now.

Author: alexrp

Directory.Build.targets

@@ -12,6 +12,7 @@
         <Using Include="System.Diagnostics.CodeAnalysis" />
         <Using Include="System.Drawing" />
         <Using Include="System.Globalization" />
+        <Using Include="System.IO.Pipelines" />
         <Using Include="System.IO.Pipes" />
         <Using Include="System.Numerics" />
         <Using Include="System.Reflection" />

Directory.Packages.props

@@ -33,8 +33,6 @@
                         Version="9.0.0" />
         <PackageVersion Include="Microsoft.Extensions.Hosting.Systemd"
                         Version="9.0.0" />
-        <PackageVersion Include="System.IO.Pipelines"
-                        Version="9.0.0" />
         <PackageVersion Include="Wcwidth"
                         Version="2.0.0" />
     </ItemGroup>

src/core/core.csproj

@@ -10,7 +10,6 @@ This package provides the core terminal API.</PackageDescription>
     </PropertyGroup>
 
     <ItemGroup>
-        <Using Include="System.IO.Pipelines" />
         <Using Include="Vezel.Cathode.Diagnostics" />
         <Using Include="Vezel.Cathode.IO" />
         <Using Include="Vezel.Cathode.Threading" />
@@ -35,7 +34,6 @@ This package provides the core terminal API.</PackageDescription>
     <ItemGroup>
         <PackageReference Include="Microsoft.CodeAnalysis.BannedApiAnalyzers"
                           PrivateAssets="build; contentfiles" />
-        <PackageReference Include="System.IO.Pipelines" />
         <PackageReference Include="Wcwidth" />
     </ItemGroup>