Remove note from README about flattr

README.rst

@@ -64,13 +64,7 @@ You want to contribute to *khal*? Awesome!
 
 The most appreciated way of contributing is by supplying code or documentation,
 reporting bugs, creating packages for your favorite operating system, making
-khal better known by telling your friends about it, etc. If you don't have
-the time or the means to contribute in any of the above mentioned ways,
-donations are appreciated, too.
-
-.. image:: https://api.flattr.com/button/flattr-badge-large.png
-   :alt: flattr button
-   :target: http://flattr.com/thing/2475065/geierkhal-on-GitHub/
+khal better known by telling your friends about it, etc.
 
 License
 -------