MAINT Update README badges

Author: glemaitre

README.rst

@@ -4,10 +4,7 @@
 
 .. _scikit-learn-contrib: https://github.com/scikit-learn-contrib
 
-|Landscape|_ |Travis|_ |AppVeyor|_ |Codecov|_ |CircleCI|_ |PythonVersion|_ |Pypi|_ |Gitter|_
-
-.. |Landscape| image:: https://landscape.io/github/scikit-learn-contrib/imbalanced-learn/master/landscape.svg?style=flat
-.. _Landscape: https://landscape.io/github/scikit-learn-contrib/imbalanced-learn/master
+|Travis|_ |AppVeyor|_ |Codecov|_ |CircleCI|_ |PythonVersion|_ |Pypi|_ |Gitter|_
 
 .. |Travis| image:: https://travis-ci.org/scikit-learn-contrib/imbalanced-learn.svg?branch=master
 .. _Travis: https://travis-ci.org/scikit-learn-contrib/imbalanced-learn