remove old Stack.tl

Stack.tl

@@ -1,36 +0,0 @@
-local record Stack
-	contents: {any}
-	top: number
-end
-function Stack:push(val: any)
-	self.top = self.top + 1
-	table.insert(self.contents,val)
-end
-function Stack:pop(): any
-	self.top = self.top -1
-	if self.top < 0 then
-		error("Stack underflow")
-	end
-	return table.remove(self.contents)
-end
-local stack_mt = {__index = Stack}
-function Stack:new(): Stack
-	return setmetatable({contents = {}, top = 0} as Stack, stack_mt)
-end
-
-
--- operations
-function add(stack: Stack)
-	local a: any =stack:pop()
-	local b: any=stack:pop()
-	if a is number and b is number then
-		local c=a+b
-		stack:push(c)
-	else
-		error("invalid operands for add operation!")
-	end
-end
-function dot(stack: Stack)
-	print(stack:pop())
-end
-