Act Mar. 2, 1936, ch. 112, 49 Stat. 1155, amending act Feb. 10, 1936, ch. 42, 49 Stat. 1106, which repealed this section provided that no tax, civil penalty, or interest which accrued under any provision of law repealed by said act Feb. 10, 1936, and which was uncollected on date of enactment of said act Feb. 10, 1936, was to be collected; and all liens for taxes, civil penalties, or interest arising out of taxes under such provisions of law were cancelled and released.