revert conda cache- bitbucket does not have this default.

bitbucket-pipelines.yml

@@ -9,7 +9,7 @@ pipelines:
   default:
     - step:
         caches:
-          - conda
+          - condacache
           - pip
         script: # Modify the commands below to build your repository.
           - apt-get update -y && apt-get -y install libgl1-mesa-glx