chore: stop generating skeleton tests (#47)

We do not leverage the tests produced by openapi-generator, and doing so
would be a fairly large lift. There is an existing pattern in this repo
to use the Ansible collection's end-to-end tests to validate SDK
changes. If we add tests directly to this repo in the future, those
should be added outside of the generated code to keep our codegen logic
as simple as possible.

Author: ctreatma

config/openapi-generator.json

@@ -3,5 +3,9 @@
     "disallowAdditionalPropertiesIfNotPresent": false,
     "inlineSchemaOptions": {
         "RESOLVE_INLINE_ENUMS": true
+    },
+    "globalProperties": {
+        "modelTests": false,
+        "apiTests": false
     }
 }