Removed unused vars.

init.lua

@@ -1,6 +1,4 @@
 
-print("Matrix bridge loaded.")
-
 local modpath = minetest.get_modpath(minetest.get_current_modname())
 
 dofile(modpath.."/config.lua")
@@ -21,7 +19,6 @@ local MatrixChat = {
     userid   = nil,
     token    = nil,
     since    = nil,
-    lastok_since = nil,
     eventid  = nil
 }
 
@@ -92,7 +89,6 @@ function MatrixChat:sync(timeout)
             local response = minetest.parse_json(res.data)
             if response ~= nil then
                 MatrixChat:minechat(response)
-                self.lastok_since = self.since
                 self.since = response.next_batch
             end
         end
@@ -159,11 +155,10 @@ end
 -- print a sync url to console to test matrix connection in other applications
 function MatrixChat:get_access_url()
     local params = {}
-    -- no filter param
     if self.since ~= nil then
-        params[1] = "since=" .. self.since
+        table.insert(params, "since=" .. self.since)
     end
-    params[2] = "access_token=" .. self.token
+    table.insert(params, "access_token=" .. self.token)
     local u = self.server .. "/_matrix/client/r0/sync?" .. table.concat(params, "&")
     print(u)
 end