We don't need environment_enpt_polymer.yml anymore since everything is now...

We don't need environment_enpt_polymer.yml anymore since everything is now bundled into the enpt conda builds.

Signed-off-by: Daniel Scheffler <danschef@gfz-potsdam.de>

tests/gitlab_CI_docker/context/environment_enpt_polymer.yml

-name: enpt_polymer
-
-channels: &id1
-  - conda-forge
-
-dependencies:
-  - python=3.*.*
-  - pip  # avoids that conda uses the wrong pip
-  - enpt
-
-  - cdsapi
-  - cython
-  - gdal
-  - netcdf4
-  - numpy
-  - pandas
-  - pygrib
-  - pyhdf
-  - scipy
-  - xarray
-
-  - pip:
-      - acwater>=0.3.0
-      - ecmwf-api-client