Remove `PerformError` (#3066)

This removes `PerformError`, which was needed when we still had
polylith.

This removes quite a bunch of
```go
if err != nil {
	return err
}
if err := res.Error; err != nil {
	return err.JSONResponse()
}
```

Hopefully can be read commit by commit. [skip ci]

1 files changed, 1 insertions, 1 deletions

diff --git a/roomserver/storage/interface.go b/roomserver/storage/interface.go
index 1cf05d59..a2364e2e 100644
--- a/roomserver/storage/interface.go
+++ b/roomserver/storage/interface.go
@@ -139,7 +139,7 @@ type Database interface {
 	// not found.
 	// Returns an error if the retrieval went wrong.
 	EventsFromIDs(ctx context.Context, roomInfo *types.RoomInfo, eventIDs []string) ([]types.Event, error)
-	// Publish or unpublish a room from the room directory.
+	// PerformPublish publishes or unpublishes a room from the room directory. Returns a database error, if any.
 	PublishRoom(ctx context.Context, roomID, appserviceID, networkID string, publish bool) error
 	// Returns a list of room IDs for rooms which are published.
 	GetPublishedRooms(ctx context.Context, networkID string, includeAllNetworks bool) ([]string, error)