Removed deprecated functionality

Removed hasName/getName on Systems and Worlds.

Removed Entity.__components since it had a duplicate version of the components stored in the Entity itself.

concord/world.lua

@@ -34,7 +34,6 @@ function World.new()
 
       __systemLookup = {},
 
-      __name    = nil,
       __isWorld = true,
    }, World.__mt)
 
@@ -349,18 +348,6 @@ function World:deserialize(data, append)
    self:__flush()
 end
 
---- Returns true if the World has a name.
--- @treturn boolean
-function World:hasName()
-   return self.__name and true or false
-end
-
---- Returns the name of the World.
--- @treturn string
-function World:getName()
-   return self.__name
-end
-
 --- Callback for when an Entity is added to the World.
 -- @tparam Entity e The Entity that was added
 function World:onEntityAdded(e) -- luacheck: ignore