Proj0058: Remove legacy project nodes

Project files that were created with the MSBuild (non-SDK) project system contain nodes that have no meaning for the .NET SDK. When converted (as suggested by Proj0002) some of those nodes are left behind. These relics only add noise, and should be removed.

Non-compliant

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>net10.0</TargetFramework>
    <ProjectGuid>{ECC1C67A-4BD7-400F-92C5-39395F05B586}</ProjectGuid>
    <AppDesignerFolder>Properties</AppDesignerFolder>
    <AssemblyCompany>Legacy company</AssemblyCompany>
    <FileAlignment>512</FileAlignment>
  </PropertyGroup>

</Project>

Compliant

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>net10.0</TargetFramework>
  </PropertyGroup>

</Project>