[NVPTX][NFC] Remove unneeded declarations in test (#101167)

Only the bf16 declarations are needed, as only they are lowered in
AutoUpgrade.cpp.
f16 and other builtins have LLVM intrinsics already defined.

Author: Hugh Delaney

llvm/test/CodeGen/NVPTX/math-intrins-sm80-ptx70-autoupgrade.ll

@@ -6,40 +6,16 @@ declare i32 @llvm.nvvm.abs.bf16x2(i32)
 declare i16 @llvm.nvvm.neg.bf16(i16)
 declare i32 @llvm.nvvm.neg.bf16x2(i32)
 
-declare float @llvm.nvvm.fmin.nan.f(float, float)
-declare float @llvm.nvvm.fmin.ftz.nan.f(float, float)
-declare half @llvm.nvvm.fmin.f16(half, half)
-declare half @llvm.nvvm.fmin.ftz.f16(half, half)
-declare half @llvm.nvvm.fmin.nan.f16(half, half)
-declare half @llvm.nvvm.fmin.ftz.nan.f16(half, half)
-declare <2 x half> @llvm.nvvm.fmin.f16x2(<2 x half>, <2 x half>)
-declare <2 x half> @llvm.nvvm.fmin.ftz.f16x2(<2 x half>, <2 x half>)
-declare <2 x half> @llvm.nvvm.fmin.nan.f16x2(<2 x half>, <2 x half>)
-declare <2 x half> @llvm.nvvm.fmin.ftz.nan.f16x2(<2 x half>, <2 x half>)
 declare i16 @llvm.nvvm.fmin.bf16(i16, i16)
 declare i16 @llvm.nvvm.fmin.nan.bf16(i16, i16)
 declare i32 @llvm.nvvm.fmin.bf16x2(i32, i32)
 declare i32 @llvm.nvvm.fmin.nan.bf16x2(i32, i32)
 
-declare float @llvm.nvvm.fmax.nan.f(float, float)
-declare float @llvm.nvvm.fmax.ftz.nan.f(float, float)
-declare half @llvm.nvvm.fmax.f16(half, half)
-declare half @llvm.nvvm.fmax.ftz.f16(half, half)
-declare half @llvm.nvvm.fmax.nan.f16(half, half)
-declare half @llvm.nvvm.fmax.ftz.nan.f16(half, half)
-declare <2 x half> @llvm.nvvm.fmax.f16x2(<2 x half>, <2 x half>)
-declare <2 x half> @llvm.nvvm.fmax.ftz.f16x2(<2 x half>, <2 x half>)
-declare <2 x half> @llvm.nvvm.fmax.nan.f16x2(<2 x half>, <2 x half>)
-declare <2 x half> @llvm.nvvm.fmax.ftz.nan.f16x2(<2 x half>, <2 x half>)
 declare i16 @llvm.nvvm.fmax.bf16(i16, i16)
 declare i16 @llvm.nvvm.fmax.nan.bf16(i16, i16)
 declare i32 @llvm.nvvm.fmax.bf16x2(i32, i32)
 declare i32 @llvm.nvvm.fmax.nan.bf16x2(i32, i32)
 
-declare half @llvm.nvvm.fma.rn.relu.f16(half, half, half)
-declare half @llvm.nvvm.fma.rn.ftz.relu.f16(half, half, half)
-declare <2 x half> @llvm.nvvm.fma.rn.relu.f16x2(<2 x half>, <2 x half>, <2 x half>)
-declare <2 x half> @llvm.nvvm.fma.rn.ftz.relu.f16x2(<2 x half>, <2 x half>, <2 x half>)
 declare i16 @llvm.nvvm.fma.rn.bf16(i16, i16, i16)
 declare i16 @llvm.nvvm.fma.rn.relu.bf16(i16, i16, i16)
 declare i32 @llvm.nvvm.fma.rn.bf16x2(i32, i32, i32)