fix: deactivate chemical_contaminants for now, see #3

inst/services.csv

@@ -4,7 +4,6 @@ biology,https://geo.vliz.be/geoserver/Emodnetbio/wfs
 biology_occurrence_data,https://geo.vliz.be/geoserver/Dataportal/wfs
 chemistry_cdi_data_discovery_and_access_service,https://geo-service.maris.nl/emodnet_chemistry/wfs
 chemistry_cdi_distribution_observations_per_category_and_region,https://geo-service.maris.nl/emodnet_chemistry_p36/wfs
-chemistry_contaminants,https://nodc.ogs.trieste.it/geoserver/Contaminants/wfs
 chemistry_marine_litter,https://www.ifremer.fr/services/wfs/emodnet_chemistry2
 geology_coastal_behavior,https://drive.emodnet-geology.eu/geoserver/tno/wfs
 geology_events_and_probabilities,https://drive.emodnet-geology.eu/geoserver/ispra/wfs

tests/testthat/_snaps/client.md

@@ -1,6 +1,6 @@
 # Error when wrong service
 
-    Assertion on 'service' failed: Must be element of set {'bathymetry','biology','biology_occurrence_data','chemistry_cdi_data_discovery_and_access_service','chemistry_cdi_distribution_observations_per_category_and_region','chemistry_contaminants','chemistry_marine_litter','geology_coastal_behavior','geology_events_and_probabilities','geology_marine_minerals','geology_sea_floor_bedrock','geology_seabed_substrate_maps','geology_submerged_landscapes','human_activities','physics','seabed_habitats_general_datasets_and_products','seabed_habitats_individual_habitat_map_and_model_datasets'}, but is 'blop'.
+    Assertion on 'service' failed: Must be element of set {'bathymetry','biology','biology_occurrence_data','chemistry_cdi_data_discovery_and_access_service','chemistry_cdi_distribution_observations_per_category_and_region','chemistry_marine_litter','geology_coastal_behavior','geology_events_and_probabilities','geology_marine_minerals','geology_sea_floor_bedrock','geology_seabed_substrate_maps','geology_submerged_landscapes','human_activities','seabed_habitats_general_datasets_and_products','seabed_habitats_individual_habitat_map_and_model_datasets'}, but is 'blop'.
 
 # Services down handled