[llvm] [UTC] Don't leave dangling CHECK-SAME when removing CHECK lines (PR #82569)

[Henrik G. Olsson via llvm-commits]

hnrklssn wrote:

> LGTM assuming all tests are passing (do the other update scripts need changes too, e.g. update_cc_test_checks.py?)

No, doesn't seem like it, luckily

https://github.com/llvm/llvm-project/pull/82569