Remove legacy packages

Author: localden

src/ModelContextProtocol/ModelContextProtocol.csproj

@@ -36,7 +36,6 @@
     <PackageReference Include="Microsoft.Extensions.AI.Abstractions" />
     <PackageReference Include="Microsoft.Extensions.AI" />
     <PackageReference Include="Microsoft.Extensions.Hosting.Abstractions" />
-    <PackageReference Include="Microsoft.Extensions.Http" />
     <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" />
     <PackageReference Include="System.Net.ServerSentEvents" />
   </ItemGroup>