[mcl_nether] fix warnings

mods/ITEMS/mcl_nether/lava.lua

@@ -1,12 +1,6 @@
 -- Lava in the Nether
 
-local S = minetest.get_translator("mcl_nether")
-local N = function(s) return s end
-
-local msg = {
-	N("@1 has become one with the lava."),
-	N("@1 has been consumed by the lava."),
-}
+local S = minetest.get_translator(minetest.get_current_modname())
 
 -- TODO: Increase flow speed. This could be done by reducing viscosity,
 -- but this would also allow players to swim faster in lava.
@@ -20,7 +14,6 @@ lava_src_def._doc_items_usagehelp = nil
 lava_src_def.liquid_range = 7
 lava_src_def.liquid_alternative_source = "mcl_nether:nether_lava_source"
 lava_src_def.liquid_alternative_flowing = "mcl_nether:nether_lava_flowing"
-lava_src_def._mcl_node_death_message = msg,
 minetest.register_node("mcl_nether:nether_lava_source", lava_src_def)
 
 local lava_flow_def = table.copy(minetest.registered_nodes["mcl_core:lava_flowing"])
@@ -29,7 +22,6 @@ lava_flow_def._doc_items_create_entry = false
 lava_flow_def.liquid_range = 7
 lava_flow_def.liquid_alternative_flowing = "mcl_nether:nether_lava_flowing"
 lava_flow_def.liquid_alternative_source = "mcl_nether:nether_lava_source"
-lava_flow_def._mcl_node_death_message = msg,
 minetest.register_node("mcl_nether:nether_lava_flowing", lava_flow_def)
 
 -- Add entry aliases for the Help

mods/ITEMS/mcl_nether/locale/mcl_nether.de.tr

@@ -38,5 +38,3 @@ Place this item on soul sand to plant it and watch it grow.=Platzieren Sie den G
 Burns your feet=Verbrennt Ihre Füße
 Grows on soul sand=Wächst auf Seelensand
 Reduces walking speed=Reduziert das Schritttempo
-@1 has become one with the lava.=@1 wurde eins mit der Lava.
-@1 has been consumed by the lava.=@1 wurde von der Lava verzehrt.

mods/ITEMS/mcl_nether/locale/mcl_nether.fr.tr

@@ -38,5 +38,3 @@ Place this item on soul sand to plant it and watch it grow.=Placez cet article s
 Burns your feet=Vous brûle les pieds
 Grows on soul sand=Pousse sur le sable de l'âme
 Reduces walking speed=Réduit la vitesse de marche
-@1 has become one with the lava.=@1 est devenu un avec la lave.
-@1 has been consumed by the lava.=@1 a été consumé par la lave.

mods/ITEMS/mcl_nether/locale/mcl_nether.ru.tr

@@ -38,5 +38,3 @@ Place this item on soul sand to plant it and watch it grow.=Поместите
 Burns your feet=Обжигает ваши ноги
 Grows on soul sand=Растёт на песке душ
 Reduces walking speed=Уменьшает скорость ходьбы
-@1 has become one with the lava.=@1 породнился(лась) с лавой.
-@1 has been consumed by the lava.=@1 был(а) поглощен(а) лавой.

mods/ITEMS/mcl_nether/locale/template.txt

@@ -38,5 +38,3 @@ Place this item on soul sand to plant it and watch it grow.=
 Burns your feet=
 Grows on soul sand=
 Reduces walking speed=
-@1 has become one with the lava.=
-@1 has been consumed by the lava.=