kern: update scheduler for 13.0.0 change, fix some ctz/clz bugs

libraries/libvapours/include/vapours/util/util_alignment.hpp

@@ -78,9 +78,4 @@ namespace ams::util {
         return IsAligned(reinterpret_cast<uintptr_t>(value), alignment);
     }
 
-    template<typename T, typename U> requires std::integral<T> && std::integral<U>
-    constexpr ALWAYS_INLINE T DivideUp(T x, U y) {
-        return (x + (y - 1)) / y;
-    }
-
 }