FoxitReader: permanently hide the left Navigation/Bookmarks panel

Disable the following in ~/.config/Foxit Software/Foxit Reader.conf:

ShowHideBookmarks\Active=0 — hides the Bookmarks panel.
LeftWidth=0 — sets the left panel width to zero.

sed -i 's/ShowHideBookmarks\\Active=1/ShowHideBookmarks\\Active=0/g' "$HOME/.config/Foxit Software/Foxit Reader.conf"
sed -i 's/LeftWidth=305/LeftWidth=0/g' "$HOME/.config/Foxit Software/Foxit Reader.conf"