Your migration must look like this:
class RemoveCommentViewCount extends Migration
{
public function up()
{
Schema::table('articles', function($table) {
$table->dropColumn('comment_count');
$table->dropColumn('view_count');
});
}
public function down()
{
Schema::table('articles', function($table) {
$table->integer('comment_count');
$table->integer('view_count');
});
}
}
The dropColumn in the up method, because with new migration you want to delete this columns. If you make a rollback, you have another time the two columns