PPU: refactor vector rounding instructions

Fix: nearbyint -> roundeven

Utilities/JIT.h

@@ -270,7 +270,7 @@ public:
 
 	built_function& operator=(const built_function&) = delete;
 
-	template <typename F> requires (std::is_invocable_v<F, native_asm&, native_args&>)
+	template <typename F>
 	built_function(std::string_view name, F&& builder,
 		u32 line = __builtin_LINE(),
 		u32 col = __builtin_COLUMN(),
@@ -280,16 +280,6 @@ public:
 	{
 	}
 
-	template <typename F> requires (std::is_invocable_v<F>)
-	built_function(std::string_view, F&& getter,
-		u32 line = __builtin_LINE(),
-		u32 col = __builtin_COLUMN(),
-		const char* file = __builtin_FILE(),
-		const char* func = __builtin_FUNCTION())
-		: m_func(ensure(getter(), const_str(), line, col, file, func))
-	{
-	}
-
 	operator FT() const noexcept
 	{
 		return m_func;