delete some logs

One open question is how to manage logs while drawing, since they can be
extremely verbose. Neither tags nor depths seem like the right metaphor
here, and that gives me pause that I perhaps don't see the full space of
needs yet.

commands.lua

@@ -53,19 +53,16 @@ function add_hotkey_to_menu(s)
 end
 
 function source.draw_file_navigator()
-  log_start('render file navigator')
   for i,file in ipairs(File_navigation.candidates) do
     if file == 'source' then
       App.color(Menu_border_color)
       love.graphics.line(Menu_cursor-10,2, Menu_cursor-10,Menu_status_bar_height-2)
     end
-    log(2, file)
     add_file_to_menu(file, i == File_navigation.index)
     if Menu_cursor >= App.screen.width - 5 then
       break
     end
   end
-  log_end('render file navigator')
 end
 
 function add_file_to_menu(s, cursor_highlight)