By Asif Shahzad ISLAMABAD -Imran Khan was ousted as Pakistan’s prime minister on Sunday after a no-confidence vote in parliament, bringing to a premature end a tenure marked by a deteriorating economy and signs that he had lost the trust of the powerful military. Defections from his coalition reflected growing disillusionment among many Pakistanis over high inflation, rising deficits and the perception that Khan had failed to realise his campaign promises of stamping out corruption. He is unlikely to disappear from the political scene altogether, however. After the Supreme Court overturned his…