Don't pass non-existing environment provider host

[t-persson]

Applicable Issues

fixes: eiffel-community/etos#224

Description of the Change

Remove all calls to etos_lib.debug.environment_provider which would raise an exception if the ETOS_ENVIRONMENT_PROVIDER environment variable is not set.

Alternate Designs

None. This variable is no longer needed.

Possible Drawbacks

None, but we should also remove it from the etos library.

Sign-off

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Signed-off-by: Tobias Persson [email protected]