modern pip do not use --use_mirror flag anymore

Francesc Alted · Francesc Alted · commit 40735ddf9884 · 2017-01-29T13:54:05.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -15,7 +15,7 @@ before_install:
   - free -m
   - df -h
   - ulimit -a
-  - pip install -q --use-mirrors numpy
+  - pip install -q numpy
   - python -V
 
 install:
