Remove no longer applicable part. (#1970) (#1974)

(cherry picked from commit f9cd50b)

Co-authored-by: Felix Fontein <[email protected]>

docs/docsite/rst/dev_guide/developing_collections_migrating.rst

@@ -24,7 +24,6 @@ If the collection from which you are going to migrate content is included in the
 #. When the next major release of the old collection is prepared:
 
   * remove the module/plugin from the old collection
-  * remove the symlink stored in ``plugin/modules`` directory if appropriate (mainly when removing from ``community.general`` and ``community.network``)
   * remove related unit and integration tests
   * remove specific module utils (if they are NOT used by other modules/plugins or ``module_utils``)
   * remove specific documentation fragments if there are any in the old collection