system/Database/MigrationRunner.php
protected function removeHistory(string $version)
	{
		$this->db->table($this->table)
				->where('version', $version)
				->where('group', $this->group)
				->where('namespace', $this->namespace)
				->delete();
		if (is_cli())
		{
			$this->cliMessages[] = "\t" . CLI::color(lang('Migrations.removed'), 'yellow') . "($this->namespace) " . $version . '_' . $this->name;
		}
	}
protected function removeHistory(string $version)
	{
		$this->db->table($this->table)
				->where('version', $version)
				->where('group', $this->group)
				->where('namespace', $this->namespace)
				->delete();
		if (is_cli())
		{
			$this->cliMessages[] = "\t" . CLI::color(lang('Migrations.removed'), 'yellow') . "($this->namespace) " . $version . '_' . $this->name;
		}
	}
Removes a single history

@param string $version
@return void