Revert "radv: detect command buffers that do no work and drop them (v2)"

Revert "radv: detect command buffers that do no work and drop them (v2)"

This just keeps popping up minor problems and regressions we should
revisit in a more sustainable manner later.

This also reverts:
Revert "radv: query cmds should mark a cmd buffer as having draws."
Revert "radv: also fixup event emission to not get culled."

This reverts commit d1640e79328af4a63c056e3ccab299a3bffbede7.
This reverts commit 8b47b97215af7157bc15676167cab73aa5a61a76.
This reverts commit b4b19afebeac84ddce3f1f8b7ffe0da6474fe29a.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>