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

[Jay Foad via llvm-commits]

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@@ -397,23 +397,17 @@
 # GFX11-FAKE16: v_frexp_mant_f16_dpp v127, v127 dpp8:[0,0,0,0,0,0,0,0] fi:1 ; encoding: [0xea,0xb2,0xfe,0x7e,0x7f,0x00,0x00,0x00]
 # GFX11-REAL16: v_frexp_mant_f16_dpp v127.l, v127.l dpp8:[0,0,0,0,0,0,0,0] fi:1 ; encoding: [0xea,0xb2,0xfe,0x7e,0x7f,0x00,0x00,0x00]
 
-# GFX11-FAKE16-REAL16: v_frexp_mant_f16_dpp v5, v1 dpp8:[7,6,5,4,3,2,1,0] ; encoding: [0xe9,0xb2,0x0a,0x7e,0x01,0x77,0x39,0x05]
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jayfoad wrote:

These are fine, they look like a mistake from #120653.

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