According to manual
MMB pbrings up TAKE information
RMB brings up TAKE menu (where TAKE can be deleted)

On my Windows, MMB and RMB over TAKE button does not work. Thus no way, that I can see, to delete a take.

Dave_ah
On my Windows, MMB and RMB over TAKE button does not work.

manual is not referring to the Take button, but Take List pane [www.sidefx.com]

to open take list pane go to Windows/Take List
then RMB to any take in the take list tree and select Delete Take, or just select one and hit Del