Remove notification on font change (#7589)

Should reduce refreshes competition and avoid glitches.

frontend/apps/reader/modules/readerfont.lua

@@ -224,7 +224,6 @@ function ReaderFont:onSetFontSize(new_size)
     UIManager:show(Notification:new{
         text = T( _("Font size set to %1."), self.font_size),
     })
-
     return true
 end
 
@@ -300,10 +299,6 @@ end
 function ReaderFont:setFont(face)
     if face and self.font_face ~= face then
         self.font_face = face
-        UIManager:show(Notification:new{
-            text = T( _("Redrawing with font %1."), face),
-        })
-
         self.ui.document:setFontFace(face)
         -- signal readerrolling to update pos in new height
         self.ui:handleEvent(Event:new("UpdatePos"))