Is it possible to remove the {{others}} column like in {{all}}

->pipe(new \koolreport\processes\RemoveColumn(array(
    '{{all}}'
)))

tried to do so and it does not work

->pipe(new \koolreport\processes\RemoveColumn(array(
    '{{all}}','{{others}}'
)))

$this->src("db")
        ->query('CALL getTeacherSchedule(:year, :teacher_id)')
        ->params(array(
            ':year' => $this->params['year'],
            ':teacher_id' => $this->params['teacher_id']
        ))
        ->saveTo($node1);

        foreach ($this->teachersList as $teacher) {
            $node1->pipe( new Filter( array (
                array("teacher_id", "=", $teacher['id']),
                "or",
                array("teacher_id","findInSet",$teacher['id']),
            )))
            ->pipe(new \koolreport\processes\Map(array(
                "{value}" => function($row) {
                    $row['class_name'] =
                        //$row['class_name'].'<br>'.
                        ( $this->params['show_class'] != null ? $row['class_name'] != '' ? $row['class_name'] : lang('tts.no_class') : null ).'<br>'.
                        ( $this->params['show_profession'] != null ? $row['profession_name'] : null ).'<br>'.
                        ( $this->params['show_room'] != null ? $row['room_name'] : null );
                    if ( $this->params['teacher_id'] != 0 ) {
                        $this->teachersList[0]['teacher_name'] = $row['teacher_name'];
                    }
                    return $row;
                },
            )))
            ->pipe(new \koolreport\processes\Map(array(
                "{end}" => function($count, $mapState) {
                    $emptyRows = [];
                    //$days = [1, 2, 3, 4, 5, 6]; //use day name if it's your case
                    foreach ($_SESSION['settings']->allowed_days as $key => $day) {
                        if ($day == true) {
                            foreach ($_SESSION['settings']->allowed_hours as $h_key => $hour) {
                                if ($hour == true) {
                                    $emptyRows[] = ['day' => $key, 'hour_num' => $h_key];
                                }
                            }
                        }
                    }
                    return $emptyRows;
                }
            )))
            ->pipe(new Cube(array(
                'row' => 'hour_num',
                'column' => 'day',
                'max' => 'class_name'
            )))
            ->pipe(new koolreport\processes\ColumnsSort(array(
                "{name}" => "asc", //or "desc" or function($colName1, $colName2) {...}
            )))
            ->pipe(new \koolreport\processes\Map(array(
                "{value}" => function($row) {
                    foreach ($row as $k => $v)
                        if ($v == null) $row[$k] = "";
                    return $row;
                }
            )))
            ->pipe(new \koolreport\processes\RemoveColumn(array(
                '{{all}}','{{others}}'
            )))
            ->pipe(new \koolreport\processes\Map(array(
                "{meta}" => function($meta) {
                    $colMetas = $meta["columns"];
                    foreach ($colMetas as $colKey => $colMeta) {
                        if (is_numeric($colKey)) {
                            $colMetas[$colKey]['label'] = lang("tts.day_$colKey"); //for columns '1', '2', etc
                            $colMetas[$colKey]['cssStyle'] = "width: 120px";
                        }
                        else {
                            $colMetas[$colKey]['label'] = lang("tts.$colKey"); //for column 'hour_num'
                            $colMetas[$colKey]['cssStyle'] = "width: 80px";
                        }
                    }
                    $meta["columns"] = $colMetas;
                    return $meta;
                }
            )))
            ->pipe($this->dataStore("DS_" . $teacher['id']));

Yes it did. I had to solve the issue from the stored procedure side to eliminate any Null that i have in one of the (row, column, max) columns that I return. Before I did so I can assure you that even after using the code above using the RemoveColumn the column {{others}} still appears.