Remove unused stairsplus_convert.lua, code cleanup.

init.lua

@@ -1,6 +1,6 @@
 --[[
 -- More Blocks (moreblocks) by Calinou
--- Licensed under the zlib/libpng license for code and CC BY-SA for textures, see LICENSE.txt for info.
+-- Licensed under the zlib/ license for code and CC BY-SA 3.0 for textures, see LICENSE.txt for info.
 --]]
 
 moreblocks = {}
@@ -17,13 +17,13 @@ moreblocks.gettext = S
 
 local modpath = minetest.get_modpath("moreblocks")
 
-dofile(modpath.."/config.lua")
-dofile(modpath.."/circular_saw.lua")
-dofile(modpath.."/stairsplus/init.lua")
-dofile(modpath.."/nodes.lua")
-dofile(modpath.."/redefinitions.lua")
-dofile(modpath.."/crafting.lua")
-dofile(modpath.."/aliases.lua")
+dofile(modpath .. "/config.lua")
+dofile(modpath .. "/circular_saw.lua")
+dofile(modpath .. "/stairsplus/init.lua")
+dofile(modpath .. "/nodes.lua")
+dofile(modpath .. "/redefinitions.lua")
+dofile(modpath .. "/crafting.lua")
+dofile(modpath .. "/aliases.lua")
 
 if minetest.setting_getbool("log_mods") then
 	print(S("[moreblocks] loaded."))