try fix

AtsushiSakai · AtsushiSakai · commit 9bc4b3b31437 · 2018-06-08T20:37:13.000+09:00
diff --git a/.travis.yml b/.travis.yml
@@ -15,7 +15,6 @@ before_install:
     - conda info -a
 
 install:
-  - conda uninstall numpy
   - conda install numpy
   - conda install scipy
   - conda install matplotlib
