D18702: Remove monochrome font preferences icon and improve font selection icon

[Björn Feber]

GB_2 added a dependency: D18785: Use different Font Management KCM "All Fonts" 
icon.

REPOSITORY
  R266 Breeze Icons

REVISION DETAIL
  https://phabricator.kde.org/D18702

To: GB_2, #vdg
Cc: ngraham, ndavis, kde-frameworks-devel, #vdg, michaelh, bruns