Revert "CUDA: size routed MoE MMQ N-tiles from typical expert width on RDNA3 (#24546)" (#28551)
This reverts commit 0c963452ea7d19f872e455257509a4ff00e7dfc7.
Assisted-by: Claude Fable 5.1
Claude-Session: https://claude.ai/code/session_01Q7rfnkjzgnfhvJsdeXhdoH