fix: remove easy_install suffix

Author: satra

.travis.yml

@@ -8,6 +8,6 @@ before_install:
     - sudo apt-get install -qq python-networkx python-traits python-setuptools
     - virtualenv --system-site-packages ~/virtualenv/this
     - source ~/virtualenv/this/bin/activate
-    - easy_install$PYSUF nibabel # Latest pypi
+    - easy_install nibabel
 install: python setup.py build_ext --inplace
 script: make test