Remove "Biography not available" when agents are not available

core/agents/local_agent.go

@@ -9,10 +9,6 @@ import (
 
 const LocalAgentName = "local"
 
-const (
-	localBiography = "Biography not available"
-)
-
 type localAgent struct {
 	ds model.DataStore
 }
@@ -25,10 +21,6 @@ func (p *localAgent) AgentName() string {
 	return LocalAgentName
 }
 
-func (p *localAgent) GetBiography(ctx context.Context, id, name, mbid string) (string, error) {
-	return localBiography, nil
-}
-
 func (p *localAgent) GetTopSongs(ctx context.Context, id, artistName, mbid string, count int) ([]Song, error) {
 	top, err := p.ds.MediaFile(ctx).GetAll(model.QueryOptions{
 		Sort:  "playCount",