diff --git a/util/channel.lua b/util/channel.lua
deleted file mode 100644
index e879adf..0000000
--- a/util/channel.lua
+++ /dev/null
@@ -1,91 +0,0 @@
--- bi-directional http-channel
--- with long-poll GET and POST on the same URL
-
-local function Channel(http, url, cfg)
-	cfg = cfg or {}
-	local extra_headers = cfg.extra_headers or {}
-	local timeout = cfg.timeout or 1
-	local long_poll_timeout = cfg.long_poll_timeout or 30
-	local error_retry = cfg.error_retry or 10
-
-	-- assemble post-header with json content
-	local post_headers = { "Content-Type: application/json" }
-	for _,header in pairs(cfg.extra_headers) do
-		table.insert(post_headers, header)
-	end
-
-	local recv_listeners = {}
-	local run = true
-
-	local recv_loop
-
-	recv_loop = function()
-		assert(run)
-
-		-- long-poll GET
-		http.fetch({
-			url = url,
-			extra_headers = extra_headers,
-			timeout = long_poll_timeout
-		}, function(res)
-			if res.succeeded and res.code == 200 then
-				local data = minetest.parse_json(res.data)
-
-				if data then
-					for _,listener in pairs(recv_listeners) do
-						if #data > 0 then
-							-- array received
-							for _, entry in ipairs(data) do
-								listener(entry)
-							end
-						else
-							-- single item received
-							listener(data)
-						end
-					end
-				end
-				-- reschedule immediately
-				minetest.after(0, recv_loop)
-			else
-				-- error, retry after some time
-				minetest.after(error_retry, recv_loop)
-			end
-		end)
-	end
-
-
-	local send = function(data)
-		assert(run)
-		-- POST
-
-		http.fetch({
-			url = url,
-			extra_headers = post_headers,
-			timeout = timeout,
-			post_data = minetest.write_json(data)
-		}, function()
-			-- TODO: error-handling
-		end)
-	end
-
-	local receive = function(listener)
-		table.insert(recv_listeners, listener)
-	end
-
-	local close = function()
-		run = false
-	end
-
-	recv_loop();
-
-	return {
-		send = send,
-		receive = receive,
-		close = close
-	}
-
-end
-
-
-
-return Channel