Discontinuance of salt duty ends levy on salt manufactured or imported, removing the charge under excise and tariff laws. No duty shall be levied on salt under the Central Excises and Salt Act, 1944 or the Indian Tariff Act, 1934 in respect of salt manufactured in, or imported into, India for the year beginning on the first day of April, 1962, effecting a statutory discontinuance of the levy for that year.