remove #if NEVER in hashset

[danmoseley]

This is a modified copy of Hashset and someone circa 2008 figured it would be helpful to have the unused bits commented out (and indented) so as to easily diff the two. That turned out to be unnecessary.

[ladipro]

nit: The Originals directory is now empty, so maybe this can be removed as well?

msbuild/src/Build/Microsoft.Build.csproj

Lines 803 to 805 in 39e20dc

	<ItemGroup>
	<Compile Remove="Collections\RetrievableEntryHashSet\Originals\*" />
	</ItemGroup>

[ladipro]

Is it still necessary to keep modified copies of BCL containers in this repo? Specifically for RetrievableEntryHashSet, can we get the same behavior by extending from HashSet or Dictionary?

[danmoseley]

can we get the same behavior by extending from HashSet or Dictionary

Not that I'm aware of. Note that it's a hybrid of the two- a dictionary with the storage of a HashSet, because the key is stored on the value

[danmoseley]

nit: The Originals directory is now empty, so maybe this can be removed as well?

fixed