How to remove align="left" in attachment

[ShinLim]

Hi, I notice that if in a thread, a video attachment will be like

Code:

[ATTACH type="full" align="left"]123456[/ATTACH]

I need to remove align="left", so it would become
Code:

[ATTACH type="full"]123456[/ATTACH]

Is it possible ? How to do it
Thank you

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