remove unneeded api function

Author: m00nyONE

api.lua

@@ -69,25 +69,3 @@ end
 function lib.GetAllAnimatedIcons()
     return clone(a)
 end
-
-
--- cache
-local keys = {}
-local keysCached = false
---- Returns a random user
---- @return string id of a random user with a static icon
-function lib.GetRandomUserId()
-    if not keysCached then
-        for userId in pairs(s) do
-            table.insert(keys, userId)
-        end
-        keysCached = true
-    end
-
-    if #keys > 0 then
-        local randomIndex = math.random(#keys)
-        return keys[randomIndex]
-    end
-
-    return nil
-end