Formatter / Remove unused Groovy mode.

[fxprunayre]

Groovy formatter is unused and unmaintained in GeoNetwork. It is also unused in the (only one?) project which used it (geocat.ch) since ~2 years now.

This PR propose to remove it.

List of groovy formatters:

• full_view (iso19139, iso19110, dublin-core),
• partial_view (only iso19139)
• xml_view
• hierarchy_view

See
https://github.com/geonetwork/core-geonetwork/tree/main/schemas/iso19139/src/main/plugin/iso19139/formatter
https://github.com/geonetwork/core-geonetwork/tree/main/web/src/main/webapp/WEB-INF/data/data/formatter

[josegar74]

@fxprunayre probably this file requires to be updated also:

core-geonetwork/services/src/main/java/org/fao/geonet/api/records/formatters/Resource.java

Lines 129 to 131 in 3609c5d

	case "groovy":
	response.setContentType("text/x-groovy-source,groovy");
	return;

Should not be removed the full test related to https://github.com/geonetwork/core-geonetwork/pull/7346/files#diff-2b14577e24e139d9bb75bd503ec5dbb1f4f78f926107b2fc022d9e228317a5a0R63 ?

[fxprunayre]

@fxprunayre probably this file requires to be updated also:

core-geonetwork/services/src/main/java/org/fao/geonet/api/records/formatters/Resource.java

Lines 129 to 131 in 3609c5d

	case "groovy":
	response.setContentType("text/x-groovy-source,groovy");
	return;

Should not be removed the full test related to https://github.com/geonetwork/core-geonetwork/pull/7346/files#diff-2b14577e24e139d9bb75bd503ec5dbb1f4f78f926107b2fc022d9e228317a5a0R63 ?

Done. About the test, we can keep but indeed I think XSLT formatter never added extra resources like images/css/js in the formatter bundle. We can maybe cleanup this later if really unused.

[sonarcloud]

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