Update documentation

- Remove references to Porpaginas

Author: dsavina

doc/limit_offset_resultset.md

@@ -112,16 +112,6 @@ Pages (retrieved with the `take` method) also have additional methods you can ca
 - `map(callable $callback)`: will call the `$callback` on every bean of the page and return the matching array.
 
 
-Implements Porpiginas
----------------------
-
-If you are already familiar with [beberlei/porpaginas](https://github.com/beberlei/porpaginas), you probably noticed
-that TDBM result sets implement Porpaginas interfaces (the `Result` and `Page` concept comes from Porpaginas).
-
-This means that you can easily migrate to and from any ORM that uses Porpaginas for its results. You can also
-use any pagination library compatible with Porpaginas, like Pagerfanta.
-
-
 Next step
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