Clean up empty lines in .csproj files

Co-authored-by: Malcolmnixon <1863707+Malcolmnixon@users.noreply.github.com>

Author: Copilot

src/DemaConsulting.SpdxModel/DemaConsulting.SpdxModel.csproj

@@ -42,8 +42,6 @@
     <None Remove="DemaConsulting.SpdxModel.csproj.DotSettings" />
   </ItemGroup>
 
-
-
   <ItemGroup>
     <None Include="..\..\Icon.png">
       <Pack>True</Pack>

test/DemaConsulting.SpdxModel.Tests/DemaConsulting.SpdxModel.Tests.csproj

@@ -18,8 +18,6 @@
 		<None Remove="IO\Examples\SPDXJSONExample-v2.3.spdx.json" />
 	</ItemGroup>
 
-
-
 	<ItemGroup>
 		<EmbeddedResource Include="IO\Examples\SPDXJSONExample-v2.2.spdx.json" />
 		<EmbeddedResource Include="IO\Examples\SPDXJSONExample-v2.3.spdx.json" />