HsVectInstIn is dead code?

[Alan & Kim Zimmerman]

If I grep through the GHC source, or do a github search[1]

It seems that HsVectInst exists, and can be renamed, typechecked, zonked,
desugared.

But it does not get parse, and does not appear to be introduced in any
other way.

Am I missing something? Should it be deleted (as hinted at in one of the
comments?)

Alan

[1] https://github.com/ghc/ghc/search?utf8=%E2%9C%93&q=HsVectInstIn&type=
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