Fix version that worker_main_http_uri is redundant from (#14476)

* Fix version that `worker_main_http_uri` is redundant from

* Changelog

Author: David Robertson

changelog.d/14476.misc

@@ -0,0 +1 @@
+Remove the `worker_main_http_uri` configuration setting. This is now handled via internal replication.

docs/workers.md

@@ -135,8 +135,8 @@ In the config file for each worker, you must specify:
    [`worker_replication_http_port`](usage/configuration/config_documentation.md#worker_replication_http_port)).
  * If handling HTTP requests, a [`worker_listeners`](usage/configuration/config_documentation.md#worker_listeners) option
    with an `http` listener.
- * **Synapse 1.71 and older:** if handling the `^/_matrix/client/v3/keys/upload` endpoint, the HTTP URI for
-   the main process (`worker_main_http_uri`). This config option is no longer required and is ignored when running Synapse 1.72 and newer.
+ * **Synapse 1.72 and older:** if handling the `^/_matrix/client/v3/keys/upload` endpoint, the HTTP URI for
+   the main process (`worker_main_http_uri`). This config option is no longer required and is ignored when running Synapse 1.73 and newer.
 
 For example:
 

synapse/config/workers.py

@@ -166,7 +166,7 @@ def read_config(self, config: JsonDict, **kwargs: Any) -> None:
         self.worker_main_http_uri = config.get("worker_main_http_uri", None)
         if self.worker_main_http_uri is not None:
             logger.warning(
-                "The config option worker_main_http_uri is unused since Synapse 1.72. "
+                "The config option worker_main_http_uri is unused since Synapse 1.73. "
                 "It can be safely removed from your configuration."
             )