Outbound: One endpoint and at most one user only (#5144)

https://github.com/XTLS/Xray-core/pull/5124#issuecomment-3281091009

Fixes https://github.com/XTLS/Xray-core/pull/5124#pullrequestreview-3218097421

app/proxyman/config.go

@@ -1,23 +1 @@
 package proxyman
-
-func (s *AllocationStrategy) GetConcurrencyValue() uint32 {
-	if s == nil || s.Concurrency == nil {
-		return 3
-	}
-	return s.Concurrency.Value
-}
-
-func (s *AllocationStrategy) GetRefreshValue() uint32 {
-	if s == nil || s.Refresh == nil {
-		return 5
-	}
-	return s.Refresh.Value
-}
-
-func (c *ReceiverConfig) GetEffectiveSniffingSettings() *SniffingConfig {
-	if c.SniffingSettings != nil {
-		return c.SniffingSettings
-	}
-
-	return nil
-}