By Syed Raza Hassan and Gibran Naiyyar Peshimam ISLAMABAD (Reuters) – Shehbaz Sharif, the person most likely to be Pakistan’s next prime minister, is little known outside his home country but has a reputation domestically as an effective administrator more than as a politician. The younger brother of three-time prime minister Nawaz Sharif, Shehbaz, 70, led a successful bid by the opposition in parliament to topple Imran Khan in a no-confidence vote early on Sunday that Khan’s supporters tried for hours to block. Analysts say Shehbaz, unlike Nawaz, enjoys amicable relations with Pakistan’s mili…