Ca: revert a wrong fix in branching logic introduced in cbb0c4fc

Ca: revert a wrong fix in branching logic introduced in !1910 (merged)

@d.smith, I just realized that the fix was wrong. It increases the ratio of clone tracks like in 10 times. The competition in TrackFinderWindow::DoCompetitionLoop() is performed on the "dead" candidates. Once they win the competition, they become "alive" and excluded from further competition.