Illustration: In Hindustan Lever Emplills Company Limited (TOMCO) and Hindustan Lever Limited was in dispute. The employees of both Hindustan Lever Limited and TOMCO were concerned about the amalgamation. One of the grounds of attack against the scheme was the absence of approval of the central government as required under S.23 of the Monopolies and Restrictive Trade Practices Act, 1969. That, however, was deleted in 1991. The Supreme Court stated that it is significant to take into account the mischief that was sought to be cured through the amendment of the statute. Accordingly, the court held that once the said section has been deleted from the statute book, the requirement of prior approval of the Central Government cannot be brought back through the backdoor. The Supreme Court was applying what rule of interpretation?