Clean up TrimmingTests infrastructure

[eerhardt]

There are a few things in our TrimmingTests that could be cleaned up.

runtime/eng/testing/linker/project.csproj.template

Lines 12 to 22 in 121b732

	<!-- These can be removed once we get an SDK with https://github.com/mono/linker/pull/1385. -->
	<LinkerNoWarn>IL2026</LinkerNoWarn>
	<!-- IL2032,IL2055,IL2057-IL2061: Reflection intrinsics with unknown arguments -->
	<LinkerNoWarn>$(LinkerNoWarn);IL2032;IL2055;IL2057;IL2058;IL2059;IL2060;IL2061</LinkerNoWarn>
	<!-- IL2062-IL2066: Unknown values passed to locations with DynamicallyAccessedMemberTypes -->
	<LinkerNoWarn>$(LinkerNoWarn);IL2062;IL2063;IL2064;IL2065;IL2066</LinkerNoWarn>
	<!-- IL2067-IL2091: Unsatisfied DynamicallyAccessedMembers requirements -->
	<LinkerNoWarn>$(LinkerNoWarn);IL2067;IL2068;IL2069;IL2070;IL2071;IL2072;IL2073;IL2074;IL2075;IL2076;IL2077;IL2078;IL2079;IL2080;IL2081;IL2082;IL2083;IL2084;IL2085;IL2086;IL2087;IL2088;IL2089;IL2090;IL2091</LinkerNoWarn>
	<!-- https://github.com/dotnet/runtime/issues/40336 - need to suppress IL2008;IL2009;IL2037 on non-Windows -->
	<LinkerNoWarn Condition="!$(RuntimeIdentifier.StartsWith('win'))">$(LinkerNoWarn);IL2008;IL2009;IL2037</LinkerNoWarn>
	<_ExtraTrimmerArgs>{ExtraTrimmerArgs} $(_ExtraTrimmerArgs) --nowarn $(LinkerNoWarn)</_ExtraTrimmerArgs>

Also, once we have an SDK with dotnet/sdk#16094 (which I believe will be a 6.0-preview3 sdk), we can remove:

runtime/eng/testing/linker/SupportFiles/Directory.Build.targets

Lines 20 to 30 in 121b732

	<Target Name="EnsureAllAssembliesAreLinked"
	BeforeTargets="PrepareForILLink">
	<ItemGroup>
	<ManagedAssemblyToLink>
	<TrimMode>link</TrimMode>
	</ManagedAssemblyToLink>
	<!-- Pass the app assembly as a root -->
	<TrimmerRootAssembly Include="@(IntermediateAssembly)" />
	</ItemGroup>
	</Target>

And just generate IsTrimmable=true assembly metadata on the console apps, which will ensure they are fully trimmed.

cc @joperezr

Tagging subscribers to this area: @safern, @ViktorHofer, @Anipik
See info in area-owners.md if you want to be subscribed.

Issue Details

---

There are a few things in our TrimmingTests that could be cleaned up.

runtime/eng/testing/linker/project.csproj.template

Lines 12 to 22 in 121b732

	<!-- These can be removed once we get an SDK with https://github.com/mono/linker/pull/1385. -->
	<LinkerNoWarn>IL2026</LinkerNoWarn>
	<!-- IL2032,IL2055,IL2057-IL2061: Reflection intrinsics with unknown arguments -->
	<LinkerNoWarn>$(LinkerNoWarn);IL2032;IL2055;IL2057;IL2058;IL2059;IL2060;IL2061</LinkerNoWarn>
	<!-- IL2062-IL2066: Unknown values passed to locations with DynamicallyAccessedMemberTypes -->
	<LinkerNoWarn>$(LinkerNoWarn);IL2062;IL2063;IL2064;IL2065;IL2066</LinkerNoWarn>
	<!-- IL2067-IL2091: Unsatisfied DynamicallyAccessedMembers requirements -->
	<LinkerNoWarn>$(LinkerNoWarn);IL2067;IL2068;IL2069;IL2070;IL2071;IL2072;IL2073;IL2074;IL2075;IL2076;IL2077;IL2078;IL2079;IL2080;IL2081;IL2082;IL2083;IL2084;IL2085;IL2086;IL2087;IL2088;IL2089;IL2090;IL2091</LinkerNoWarn>
	<!-- https://github.com/dotnet/runtime/issues/40336 - need to suppress IL2008;IL2009;IL2037 on non-Windows -->
	<LinkerNoWarn Condition="!$(RuntimeIdentifier.StartsWith('win'))">$(LinkerNoWarn);IL2008;IL2009;IL2037</LinkerNoWarn>
	<_ExtraTrimmerArgs>{ExtraTrimmerArgs} $(_ExtraTrimmerArgs) --nowarn $(LinkerNoWarn)</_ExtraTrimmerArgs>

Also, once we have an SDK with dotnet/sdk#16094 (which I believe will be a 6.0-preview3 sdk), we can remove:

runtime/eng/testing/linker/SupportFiles/Directory.Build.targets

Lines 20 to 30 in 121b732

	<Target Name="EnsureAllAssembliesAreLinked"
	BeforeTargets="PrepareForILLink">
	<ItemGroup>
	<ManagedAssemblyToLink>
	<TrimMode>link</TrimMode>
	</ManagedAssemblyToLink>
	<!-- Pass the app assembly as a root -->
	<TrimmerRootAssembly Include="@(IntermediateAssembly)" />
	</ItemGroup>
	</Target>

And just generate IsTrimmable=true assembly metadata on the console apps, which will ensure they are fully trimmed.

cc @joperezr

Author:	eerhardt
Assignees:	-
Labels:	area-Infrastructure-libraries, test enhancement
Milestone:	-

[ViktorHofer]

Moving to issues to area-Meta as it this isn't actionable by the infra team.

Tagging subscribers to 'linkable-framework': @eerhardt, @vitek-karas, @LakshanF, @tannergooding, @sbomer
See info in area-owners.md if you want to be subscribed.

Issue Details

---

There are a few things in our TrimmingTests that could be cleaned up.

runtime/eng/testing/linker/project.csproj.template

Lines 12 to 22 in 121b732

	<!-- These can be removed once we get an SDK with https://github.com/mono/linker/pull/1385. -->
	<LinkerNoWarn>IL2026</LinkerNoWarn>
	<!-- IL2032,IL2055,IL2057-IL2061: Reflection intrinsics with unknown arguments -->
	<LinkerNoWarn>$(LinkerNoWarn);IL2032;IL2055;IL2057;IL2058;IL2059;IL2060;IL2061</LinkerNoWarn>
	<!-- IL2062-IL2066: Unknown values passed to locations with DynamicallyAccessedMemberTypes -->
	<LinkerNoWarn>$(LinkerNoWarn);IL2062;IL2063;IL2064;IL2065;IL2066</LinkerNoWarn>
	<!-- IL2067-IL2091: Unsatisfied DynamicallyAccessedMembers requirements -->
	<LinkerNoWarn>$(LinkerNoWarn);IL2067;IL2068;IL2069;IL2070;IL2071;IL2072;IL2073;IL2074;IL2075;IL2076;IL2077;IL2078;IL2079;IL2080;IL2081;IL2082;IL2083;IL2084;IL2085;IL2086;IL2087;IL2088;IL2089;IL2090;IL2091</LinkerNoWarn>
	<!-- https://github.com/dotnet/runtime/issues/40336 - need to suppress IL2008;IL2009;IL2037 on non-Windows -->
	<LinkerNoWarn Condition="!$(RuntimeIdentifier.StartsWith('win'))">$(LinkerNoWarn);IL2008;IL2009;IL2037</LinkerNoWarn>
	<_ExtraTrimmerArgs>{ExtraTrimmerArgs} $(_ExtraTrimmerArgs) --nowarn $(LinkerNoWarn)</_ExtraTrimmerArgs>

Also, once we have an SDK with dotnet/sdk#16094 (which I believe will be a 6.0-preview3 sdk), we can remove:

runtime/eng/testing/linker/SupportFiles/Directory.Build.targets

Lines 20 to 30 in 121b732

	<Target Name="EnsureAllAssembliesAreLinked"
	BeforeTargets="PrepareForILLink">
	<ItemGroup>
	<ManagedAssemblyToLink>
	<TrimMode>link</TrimMode>
	</ManagedAssemblyToLink>
	<!-- Pass the app assembly as a root -->
	<TrimmerRootAssembly Include="@(IntermediateAssembly)" />
	</ItemGroup>
	</Target>

And just generate IsTrimmable=true assembly metadata on the console apps, which will ensure they are fully trimmed.

cc @joperezr

Author:	eerhardt
Assignees:	-
Labels:	area-Meta, linkable-framework, test enhancement
Milestone:	-