diff --git a/lua-minify.lua b/lua-minify.lua
index f9e6a62..388b5b3 100644
--- a/lua-minify.lua
+++ b/lua-minify.lua
@@ -89,55 +89,6 @@ local util = {
 	printf     = printf,
 }
 
---
--- ParseLua.lua
---
--- The main lua parser and lexer.
--- LexLua returns a Lua token stream, with tokens that preserve
--- all whitespace formatting information.
--- ParseLua returns an AST, internally relying on LexLua.
---
-
--- From http://metalua.luaforge.net/src/lib/strict.lua.html
---
--- strict.lua
--- checks uses of undeclared global variables
--- All global variables must be 'declared' through a regular assignment
--- (even assigning nil will do) in a main chunk before being used
--- anywhere or assigned to inside a function.
---
-
-local mt = getmetatable(_G)
-if mt == nil then
-  mt = {}
-  setmetatable(_G, mt)
-end
-
-__STRICT = true
-mt.__declared = {}
-
-mt.__newindex = function (t, n, v)
-  if __STRICT and not mt.__declared[n] then
-    local w = debug.getinfo(2, "S").what
-    if w ~= "main" and w ~= "C" then
-      error("assign to undeclared variable '"..n.."'", 2)
-    end
-    mt.__declared[n] = true
-  end
-  rawset(t, n, v)
-end
-  
-mt.__index = function (t, n)
-  if not mt.__declared[n] and debug.getinfo(2, "S").what ~= "C" then
-    error("variable '"..n.."' is not declared", 2)
-  end
-  return rawget(t, n)
-end
-
-function global(...)
-   for _, v in ipairs{...} do mt.__declared[v] = true end
-end
-
 local lookupify = util.lookupify
 
 local WhiteChars = lookupify{' ', '\n', '\t', '\r'}