remove self hosted expansion flag in favor of grouping hosted expansion with hosted purhcase and it's flag.

server/platform/services/telemetry/telemetry.go

@@ -476,7 +476,6 @@ func (ts *TelemetryService) trackConfig() {
 		"post_priority":                                           *cfg.ServiceSettings.PostPriority,
 		"self_hosted_purchase":                                    *cfg.ServiceSettings.SelfHostedPurchase,
 		"allow_synced_drafts":                                     *cfg.ServiceSettings.AllowSyncedDrafts,
-		"self_hosted_expansion":                                   *cfg.ServiceSettings.SelfHostedExpansion,
 	})
 
 	ts.SendTelemetry(TrackConfigTeam, map[string]any{