Remove /pulp/api/v3/rpm/copy/ endpoint

Pending design decisions in #5344, unexpose the copy endpoint.
Document the existing copy functionality via versions endpoint.

closes #5681
https://pulp.plan.io/issues/5681

CHANGES/5681.removal

@@ -0,0 +1,4 @@
+Remove /pulp/api/v3/rpm/copy/ endpoint
+
+Removed the /pulp/api/v3/rpm/copy/ endpoint. To copy all content now with typed repos, use the
+modify endpoint on a repository.

docs/workflows/copy.rst

@@ -9,28 +9,15 @@ If you want to copy RPM content from one repository into another repository, you
 Copy workflow
 -------------
 
-You can use the copy endpoint to copy RPM-related content present in one repository or
-repository version over to another repository. If you specify a repository, then the latest
-repository version for that repository will be used.
+You can use the modify endpoint on a repository to copy all content present in one repository
+version to another by specifying a base version.
 
-``http POST http://localhost:24817/pulp/api/v3/rpm/copy/ source_repo=${SRC_REPO_HREF} dest_repo=${DEST_REPO_HREF}``
-
-or
-
-``http POST http://localhost:24817/pulp/api/v3/rpm/copy/ source_repo_version=${SRC_REPO_VER_HREF} dest_repo=${DEST_REPO_HREF}``
+``http POST http://localhost:24817${REPO_HREF}modify/ base_version=${BASE_REPO_HREF}``
 
 .. code:: json
 
     {
-       "pulp_href": "/pulp/api/v3/tasks/f2b525e3-8d8f-4246-adab-2fabd2b089a8/",
-       "created_resources": [
-           "/pulp/api/v3/content/rpm/packages/1edf8d4e-4293-4b66-93cd-8e913731c87a/",
-       ],
+        "created_resources": [
+            "/pulp/api/v3/repositories/rpm/rpm/5fc8a78e-068a-47c0-b728-a5475042573a/versions/2/"
+        ],
     }
-
-You can also specify which types of content you would like to copy by providing a value for the
-"types" parameter. Types that are not listed will not be copied. The supported types are "package"
-and "advisory". For example, this query will copy only advisories, and not packages. If not
-provided, all types will be copied.
-
-``http POST http://localhost:24817/pulp/api/v3/rpm/copy/ source_repo=${SRC_REPO_HREF} dest_repo=${DEST_REPO_HREF} types=advisory``