mQmry‖Hide Comment

uLRBj‖Hides the comment of the cell.

To access this command...

ebLJB‖From the menu bar:

jph25‖Choose Sheet - Cell Comments - Hide Comment

t8dFS‖From the context menu:

ZotAh‖Choose Hide Comment.

sXy2C‖From toolbars:

FBGrL‖Icon Hide Comment

RQgGH‖Hide Comment