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

[Arseniy Obolenskiy via llvm-commits]

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@@ -416,7 +416,6 @@ define amdgpu_kernel void @raw_ptr_buffer_atomic_min_rtn_f32_off4_slc(ptr addrsp
 ; G_GFX1310-NEXT:    s_wait_loadcnt 0x0
 ; G_GFX1310-NEXT:    ds_store_b32 v1, v0
 ; G_GFX1310-NEXT:    s_endpgm
-; GFX1010-LABEL: raw_ptr_buffer_atomic_min_rtn_f32_off4_slc:
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aobolensk wrote:

we don't have `-check-prefix=` for it

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