tewting by removing caches for keras

Author: topepo

.travis.yml

@@ -22,12 +22,9 @@ matrix:
   allow_failures:
     - r: 3.3       # inum      install failure (seg fault)
     - r: 3.2       # partykit  install failure (libcoin needs >= 3.4.0)
-    - r: 3.4       # mvtnorm requires >= 3.5.0
+    - r: 3.4       # mvtnorm   requires >= 3.5.0
+
 
-cache:
-  directories:
-    - $HOME/.keras
-    - $HOME/.cache/pip
 
 env:
   global: