assuming your not in the motion workspace, did you not just try unticking timeline from window on the menu?
Yes, I've tried that, it just seems to keep turning back on when I open a new file or start photoshop even if I untick it.
I'm moving this post from this forum for photoshop-dot-com (an online portal) to the correct forum for Photoshop pro users like yourselves.
FYI, the correct forum URL is: http://forums.adobe.com/community/photoshop
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