Rod Stewart will be unable to continue his “One Last Time” farewell tour following a coronary stent procedure and after postponing and canceling a few performances, a representative for the singer has confirmed. Stewart canceled his Tuesday night performance at Rocket Arena in Cleveland shortly after postponing his Sunday concert in Cincinnati at Riverbend Music Center. The latter venue said at the time that it was due “to an unforeseen but minor medical procedure that required prompt attention.” Stewart also canceled a few dates earlier this year, including two in Las Vegas and one in San Diego. “Following further medical evaluation,…