Revert "TEMPORARY: generator.yml: Delay LLVM ToT builds until next Tu…

…esday"

This reverts commit e0069ac.

While this was not as temporary as I would have hoped, the issue that
was the catalyst for this delay has been fixed by reverting the
counted_by attribute. Revert the delay so builds go back to their normal
cadence.

Signed-off-by: Nathan Chancellor <nathan@kernel.org>