src/Db/Migration.php
public function dropCommentFromTable($table)
    {
        $cmdPromise = $this->createCommand()->dropCommentFromTable($table)->execute();
        return $this->execPromise($cmdPromise, "drop comment from table $table");
    }
public function dropCommentFromTable($table)
    {
        $cmdPromise = $this->createCommand()->dropCommentFromTable($table)->execute();
        return $this->execPromise($cmdPromise, "drop comment from table $table");
    }
Builds a SQL statement for dropping comment from table.

@param string $table the table whose column is to be commented. The table name will be properly quoted by the method.
@return LazyPromiseInterface