diff -ruN decoblocks.old/nodes.lua decoblocks/nodes.lua
--- decoblocks.old/nodes.lua	2019-02-17 02:46:44.916000000 -0800
+++ decoblocks/nodes.lua	2019-02-17 02:47:08.616000000 -0800
@@ -1222,7 +1222,7 @@
 	sounds = default.node_sound_stone_defaults(),
 })
 
-
+if false then
 minetest.register_node("decoblocks:polar_bear_rug", {
 	description = "Polar Bear Rug",
 	drawtype = "mesh",
@@ -1245,6 +1245,7 @@
 	groups = {cracky = 2, oddly_breakable_by_hand = 1},
 	sounds = default.node_sound_stone_defaults(),
 })
+end
 
 minetest.register_node("decoblocks:rusty_steel_plating", {
 	description = "Rusty Plating",