fix: remove duplicate README.md and icon.png from NuGet package

Author: roeldeb

Directory.Build.props

@@ -19,7 +19,6 @@
 
   <ItemGroup>
     <None Include="$(MSBuildThisFileDirectory)\images\logo.png" Pack="true" Visible="false" PackagePath="" />
-    <None Include="$(MSBuildThisFileDirectory)\README.md" Pack="true" PackagePath=""/>
   </ItemGroup>
 
   <PropertyGroup>
@@ -54,9 +53,8 @@
   </ItemGroup>
 
 	<ItemGroup>
-		<None Include="images\icon.png" Pack="true" PackagePath="" />
-		<None Include="README.md" Pack="true" PackagePath="" />
-		<None Include="LICENSE.md" Pack="true" PackagePath="" />
+		<None Include="$(MSBuildThisFileDirectory)\README.md" Pack="true" PackagePath="" />
+		<None Include="$(MSBuildThisFileDirectory)\LICENSE.md" Pack="true" PackagePath="" />
 	</ItemGroup>
 
 </Project>