[llvm] [VPlan] Use parameter packs for m_VPInstruction. NFC (PR #152272)

[Ramkumar Ramachandra via llvm-commits]

================
@@ -274,42 +268,20 @@ template <unsigned Opcode, typename... RecipeTys>
 using ZeroOpRecipe_match =
     Recipe_match<std::tuple<>, Opcode, false, RecipeTys...>;
 
-template <typename Op0_t, unsigned Opcode, typename... RecipeTys>
-using UnaryRecipe_match =
-    Recipe_match<std::tuple<Op0_t>, Opcode, false, RecipeTys...>;
-
-template <typename Op0_t, unsigned Opcode>
-using UnaryVPInstruction_match =
-    UnaryRecipe_match<Op0_t, Opcode, VPInstruction>;
-
 template <unsigned Opcode>
 using ZeroOpVPInstruction_match = ZeroOpRecipe_match<Opcode, VPInstruction>;
 
 template <typename Op0_t, unsigned Opcode>
----------------
artagnon wrote:

```suggestion
template <unsigned Opcode, typename Op0_t>
```

to match VPInstruction_match.

https://github.com/llvm/llvm-project/pull/152272