drop luarocks requirement

src/htmlparser/ElementNode.lua

@@ -1,5 +1,4 @@
 -- vim: ft=lua ts=2
-pcall(require, "luarocks.loader")
 local Set = {}
 Set.mt = {__index = Set}
 function Set:new(values)

tst/init.lua

@@ -1,4 +1,3 @@
-require("luarocks.loader")
 -- Omit next line in actual module clients; it's only to support development of the module itself
 package.path = "../src/?.lua;" .. package.path