[llvm] [bazel] Allow configuring to exclude the native target … (PR #79776)

[Scott Bennett via llvm-commits]

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@@ -96,15 +82,7 @@ builtin_thread_pointer = select({
 })
 
 # TODO: We should split out host vs. target here.
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nullcatalyst wrote:

Note that I believe that this TODO can be removed, because this CL should fix it

I left it in, just in case it was also referring to something else here

https://github.com/llvm/llvm-project/pull/79776