[llvm] [LVI] Remove unused get of Range metadata. (PR #94914)

[Nikita Popov via llvm-commits]

https://github.com/nikic approved this pull request.

LGTM. This code predates the ability to use getBlockValue() when reasoning about conditions. It could theoretically still be useful for the cases that currently pass UseBlockValue=false, but these are also less important, and this is a pretty weird special case.

https://github.com/llvm/llvm-project/pull/94914