remove links to swagger in overview chapter except for data types of Part 1 and Part 2

[BirgitBoss]

What?

remove links to swagger except for data types of Part 1 and Part 2
in
https://industrialdigitaltwin.io/aas-specifications/IDTA-01002/v3.1/http-rest-api/http-rest-api.html#_general

since not complete and difficult to maintain.

see also #465

[sebbader-sap]

No veto from my side. We just need to mention that the OpenAPI / Swagger links are provided in the profiles section.