Remove calls to SCI_SETFONTQUALITY and let the system decide what quality to use

https://groups.google.com/forum/?fromgroups=#!topic/scintilla-interest/YubAupyN4d0

Signed-off-by: Sven Strickroth <email@cs-ware.de>
Update screenshot

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>