Remove ScanCommand which was only used during initial development.

Author: tomzx

src/PHPSemVerChecker/Console/Application.php

@@ -31,7 +31,6 @@ protected function getDefaultCommands()
 	{
 		$commands = parent::getDefaultCommands();
 		$commands[] = $this->add(new CompareCommand());
-		$commands[] = $this->add(new ScanCommand());
 		return $commands;
 	}
 }