Remove coos:supports and coos:uses from the GSBPM Concepts

[tfrancart]

Here https://github.com/linked-statistics/COOS/blob/master/coos.ttl#L502
and here https://github.com/linked-statistics/COOS/blob/master/coos.ttl#L561

I see that coos:uses and coos:supports are used on the Concepts from the GSBPM and GAMSO taxonomies. This is contradictory to what is written at https://linked-statistics.github.io/COOS/coos.html#activities and to the domain / range defined in the ontology: those properties apply to Activities, not to ActivityCategories.

These triples should be deleted.

[tfrancart]

If there is a need to state that "Activities of this type frequently supports or uses activities of another type", then this should be expressed with another property than coos:supports / uses that would be derived from a SKOS mapping relation, typically a subproperty of skos:relatedMatch or skos:broaderMatch (this would in line with the choice of using skos:exactMatch to relate gamso:4 (Production) to gsbpm:statisticalProductionProcess).