This setting is saved to doc model when document is saved eventually. We
should respect the user settings, and not play with it like this -
changing this setting to false unconditionally.

Originally, setting SetNotesMode to false was meant to prevent any kind
of in-tile note rendering in case of LOK when it is turned off. But
turns out this option is only for note indicator i.e the red button. We
already have a LOK in-tile rendering guard in ScDocFunc::ShowNote that
prevents popping drawinglayer note even if corresponding UNO command is
sent by the LOK client.

Change-Id: Id6c7b2cd30cdbefe7dacc2a701638b2488ab245d