default - remove gui background to reduce media transport on mobiles

* the formspecs will look translucide

mods/default/init.lua

@@ -10,7 +10,7 @@ default.LIGHT_MAX = 14
 
 -- GUI related stuff
 default.gui_bg = "bgcolor[#080808BB;true]"
-default.gui_bg_img = "background[5,5;1,1;gui_formbg.png;true]"
+default.gui_bg_img = ""
 default.gui_slots = "listcolors[#00000069;#5A5A5A;#141318;#30434C;#FFF]"
 
 function default.get_hotbar_bg(x,y)

mods/default/legacy.lua

@@ -25,6 +25,7 @@ LIGHT_MAX = default.LIGHT_MAX
 default.gui_suvival_form = default.gui_survival_form
 default.gui_bg     = ""
 default.gui_bg_img = ""
+default.gui_slots  = ""
 
 -- Players
 if minetest.get_modpath("player_api") then

mods/default/player.lua

@@ -123,9 +123,6 @@ minetest.register_on_joinplayer(function(player)
 	default.player_set_model(player, modelchar)
 	player:set_local_animation({x=0, y=79}, {x=168, y=187}, {x=189, y=198}, {x=200, y=219}, 30)
 	player:set_properties({hp_max = hp_player_maximun})
-
-	player:hud_set_hotbar_image("gui_hotbar.png")
-	player:hud_set_hotbar_selected_image("gui_hotbar_selected.png")
 end)
 
 minetest.register_on_leaveplayer(function(player)