Revert "a lot of changes"

This reverts commit bf9604e851.

server/functions.lua

@@ -1,20 +0,0 @@
-function NDCore.getPlayer(src)
-    return ActivePlayers[src]
-end
-
-function NDCore.getPlayers(metadata, data)
-    if not metadata or not data then return ActivePlayers end 
-    local players = {}
-    for src, info in pairs(ActivePlayers) do
-        if info.metadata[metadata] == data then
-            players[src] = info
-        end
-    end
-    return players
-end
-
-for name, func in pairs(NDCore) do
-    if type(func) == "function" then
-        exports(name, func)
-    end
-end