Fix untranslatable log message assembly

We can't inject the name of the logical replication worker into a log
message like that.  But for these messages we don't really need the
precision of knowing what kind of worker it was, so just write
"logical replication worker" and keep the message in one piece.

Discussion: https://www.postgresql.org/message-id/flat/CAHut%2BPt1xwATviPGjjtJy5L631SGf3qjV9XUCmxLu16cHamfgg%40mail.gmail.com

src/backend/replication/logical/worker.c

@@ -435,20 +435,6 @@ static inline void reset_apply_error_context_info(void);
 static TransApplyAction get_transaction_apply_action(TransactionId xid,
 													 ParallelApplyWorkerInfo **winfo);
 
-/*
- * Return the name of the logical replication worker.
- */
-static const char *
-get_worker_name(void)
-{
-	if (am_tablesync_worker())
-		return _("logical replication table synchronization worker");
-	else if (am_parallel_apply_worker())
-		return _("logical replication parallel apply worker");
-	else
-		return _("logical replication apply worker");
-}
-
 /*
  * Form the origin name for the subscription.
  *
@@ -3904,9 +3890,8 @@ maybe_reread_subscription(void)
 	if (!newsub)
 	{
 		ereport(LOG,
-		/* translator: first %s is the name of logical replication worker */
-				(errmsg("%s for subscription \"%s\" will stop because the subscription was removed",
-						get_worker_name(), MySubscription->name)));
+				(errmsg("logical replication worker for subscription \"%s\" will stop because the subscription was removed",
+						MySubscription->name)));
 
 		/* Ensure we remove no-longer-useful entry for worker's start time */
 		if (!am_tablesync_worker() && !am_parallel_apply_worker())
@@ -3918,9 +3903,8 @@ maybe_reread_subscription(void)
 	if (!newsub->enabled)
 	{
 		ereport(LOG,
-		/* translator: first %s is the name of logical replication worker */
-				(errmsg("%s for subscription \"%s\" will stop because the subscription was disabled",
-						get_worker_name(), MySubscription->name)));
+				(errmsg("logical replication worker for subscription \"%s\" will stop because the subscription was disabled",
+						MySubscription->name)));
 
 		apply_worker_exit();
 	}
@@ -3954,9 +3938,8 @@ maybe_reread_subscription(void)
 							MySubscription->name)));
 		else
 			ereport(LOG,
-			/* translator: first %s is the name of logical replication worker */
-					(errmsg("%s for subscription \"%s\" will restart because of a parameter change",
-							get_worker_name(), MySubscription->name)));
+					(errmsg("logical replication worker for subscription \"%s\" will restart because of a parameter change",
+							MySubscription->name)));
 
 		apply_worker_exit();
 	}
@@ -4478,9 +4461,8 @@ InitializeApplyWorker(void)
 	if (!MySubscription)
 	{
 		ereport(LOG,
-		/* translator: %s is the name of logical replication worker */
-				(errmsg("%s for subscription %u will not start because the subscription was removed during startup",
-						get_worker_name(), MyLogicalRepWorker->subid)));
+				(errmsg("logical replication worker for subscription %u will not start because the subscription was removed during startup",
+						MyLogicalRepWorker->subid)));
 
 		/* Ensure we remove no-longer-useful entry for worker's start time */
 		if (!am_tablesync_worker() && !am_parallel_apply_worker())
@@ -4494,9 +4476,8 @@ InitializeApplyWorker(void)
 	if (!MySubscription->enabled)
 	{
 		ereport(LOG,
-		/* translator: first %s is the name of logical replication worker */
-				(errmsg("%s for subscription \"%s\" will not start because the subscription was disabled during startup",
-						get_worker_name(), MySubscription->name)));
+				(errmsg("logical replication worker for subscription \"%s\" will not start because the subscription was disabled during startup",
+						MySubscription->name)));
 
 		apply_worker_exit();
 	}
@@ -4517,9 +4498,8 @@ InitializeApplyWorker(void)
 						get_rel_name(MyLogicalRepWorker->relid))));
 	else
 		ereport(LOG,
-		/* translator: first %s is the name of logical replication worker */
-				(errmsg("%s for subscription \"%s\" has started",
-						get_worker_name(), MySubscription->name)));
+				(errmsg("logical replication apply worker for subscription \"%s\" has started",
+						MySubscription->name)));
 
 	CommitTransactionCommand();
 }