[llvm] [NVPTX] remove store.params of undef (PR #96940)

[Alex MacLean via llvm-commits]

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@@ -0,0 +1,93 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
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AlexMaclean wrote:

That's funny, @Artem-B has frequently [requested that I use this tool](https://github.com/llvm/llvm-project/pull/93628#discussion_r1618066855). If it's alright with you I'll keep this test as is, though it would be nice to have consensus on what type of tests we prefer, I wonder if the auto generation script could be updated to make the checks that are generated more flexible. 

https://github.com/llvm/llvm-project/pull/96940