[llvm] [AMDGPU] Remove dead check lines from tests (NFC) (PR #228002)

[Jay Foad via llvm-commits]

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@@ -372,7 +372,6 @@ define <2 x i32> @v_and_or_v2i32_inline_const_x4(<2 x i32> %a) {
 ; GFX10-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
 ; GFX10-DAG:     s_movk_i32 [[SR0:s[0-9]+]], 0x808
 ; GFX10-DAG:     s_movk_i32 [[SR1:s[0-9]+]], 0x809
-; GFX10-CHECK-NOT: {{.}}
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jayfoad wrote:

Should this be GFX10-NOT? I looks like it's trying to check that there are no extra lines between one "DAG" block and the next "DAG" block. But I'm not sure if that can work reliably.

https://github.com/llvm/llvm-project/pull/228002