fix many warnings

mods/PLAYER/mcl_hunger/hunger.lua

@@ -1,4 +1,4 @@
-local S = minetest.get_translator("mcl_hunger")
+--local S = minetest.get_translator("mcl_hunger")
 
 -- wrapper for minetest.item_eat (this way we make sure other mods can't break this one)
 minetest.do_item_eat = function(hp_change, replace_with_item, itemstack, user, pointed_thing)

mods/PLAYER/mcl_playerplus/init.lua

@@ -1,5 +1,3 @@
-local S = minetest.get_translator("mcl_playerplus")
-
 mcl_playerplus = {
 	elytra = {},
 }

mods/PLAYER/mcl_playerplus/locale/mcl_playerplus.de.tr

@@ -1,3 +0,0 @@
-# textdomain: mcl_playerplus
-@1 suffocated to death.=@1 erstickte zu Tode.
-@1 was prickled to death by a cactus.=@1 wurde von einem Kaktus zu Tode gepiekst.

mods/PLAYER/mcl_playerplus/locale/mcl_playerplus.es.tr

@@ -1,3 +0,0 @@
-# textdomain: mcl_playerplus
-@1 suffocated to death.=@1 ahogado hasta la muerte.
-@1 was prickled to death by a cactus.=@1 fue herido de muerte por un cactus.

mods/PLAYER/mcl_playerplus/locale/mcl_playerplus.fr.tr

@@ -1,3 +0,0 @@
-# textdomain: mcl_playerplus
-@1 suffocated to death.=@1 étouffé à mort.
-@1 was prickled to death by a cactus.=@1 a été piqué à mort par un cactus.

mods/PLAYER/mcl_playerplus/locale/mcl_playerplus.ru.tr

@@ -1,3 +0,0 @@
-# textdomain: mcl_playerplus
-@1 suffocated to death.=@1 задохнулся(ась).
-@1 was prickled to death by a cactus.=@1 был(а) до смерти заколот(а) кактусом.

mods/PLAYER/mcl_playerplus/locale/template.txt

@@ -1,3 +0,0 @@
-# textdomain: mcl_playerplus
-@1 suffocated to death.=
-@1 was prickled to death by a cactus.=

mods/PLAYER/mcl_skins/init.lua

@@ -87,7 +87,7 @@ mcl_skins.set_player_skin = function(player, skin_id)
 		return false
 	end
 	local playername = player:get_player_name()
-	local skin, skin_file, preview
+	local skin, preview
 	if skin_id == nil or type(skin_id) ~= "number" or skin_id < 0 or skin_id > mcl_skins.skin_count then
 		return false
 	elseif skin_id == 0 then
@@ -109,7 +109,7 @@ mcl_skins.set_player_skin = function(player, skin_id)
 			preview = "mcl_skins_player_dummy"
 		end
 	end
-	skin_file = skin .. ".png"
+	--local skin_file = skin .. ".png"
 	mcl_skins.skins[playername] = skin
 	mcl_skins.previews[playername] = preview
 	player:get_meta():set_string("mcl_skins:skin_id", tostring(skin_id))