update PackageLicenseExpression

ProjectCommon.targets

@@ -13,12 +13,12 @@
 		<Copyright>@2020 Norns.Urd</Copyright>
 		<PackageTags>Emit;Aop</PackageTags>
 		<Description>See - https://github.com/fs7744/Norns.Urd </Description>
-		<PackageLicenseFile>LICENSE</PackageLicenseFile>
 		<RepositoryUrl>https://github.com/fs7744/Norns.Urd</RepositoryUrl>
 		<PackageIcon>icon.png</PackageIcon>
 		<PublishRepositoryUrl>true</PublishRepositoryUrl>
 		<IncludeSymbols>true</IncludeSymbols>
 		<SymbolPackageFormat>snupkg</SymbolPackageFormat>
+		<PackageLicenseExpression>MIT</PackageLicenseExpression>
 	</PropertyGroup>
 	<ItemGroup>
 		<PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0" PrivateAssets="All" />
@@ -28,7 +28,6 @@
 			<Pack>True</Pack>
 			<PackagePath></PackagePath>
 		</None>
-		<None Include="..\..\LICENSE" Pack="true" PackagePath="LICENSE"/>
 	</ItemGroup>
 
 	<ItemGroup>