Revert: "fix: proxy-groups filter logic"

This reverts commit 8a85c63b08.

adapter/outboundgroup/common.go

@@ -29,10 +29,6 @@ func getProvidersProxies(providers []provider.ProxyProvider, touch bool, filter
 		//filterReg = regexp.MustCompile(filter)
 		filterReg = regexp2.MustCompile(filter, 0)
 		for _, p := range proxies {
-			if p.IsProxyGroup() {
-				matchedProxies = append(matchedProxies, p)
-				continue
-			}
 
 			//if filterReg.MatchString(p.Name()) {
 			if mat, _ := filterReg.FindStringMatch(p.Name()); mat != nil {

adapter/outboundgroup/fallback.go

@@ -24,10 +24,6 @@ type Fallback struct {
 	failedTime  *atomic.Int64
 }
 
-func (f *Fallback) IsProxyGroup() bool {
-	return true
-}
-
 func (f *Fallback) Now() string {
 	proxy := f.findAliveProxy(false)
 	return proxy.Name()

adapter/outboundgroup/loadbalance.go

@@ -28,10 +28,6 @@ type LoadBalance struct {
 	strategyFn strategyFn
 }
 
-func (lb *LoadBalance) IsProxyGroup() bool {
-	return true
-}
-
 var errStrategy = errors.New("unsupported strategy")
 
 func parseStrategy(config map[string]any) string {

adapter/outboundgroup/relay.go

@@ -19,10 +19,6 @@ type Relay struct {
 	filter    string
 }
 
-func (r *Relay) IsProxyGroup() bool {
-	return true
-}
-
 // DialContext implements C.ProxyAdapter
 func (r *Relay) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.Conn, error) {
 	var proxies []C.Proxy

adapter/outboundgroup/selector.go

@@ -21,10 +21,6 @@ type Selector struct {
 	providers  []provider.ProxyProvider
 }
 
-func (s *Selector) IsProxyGroup() bool {
-	return true
-}
-
 // DialContext implements C.ProxyAdapter
 func (s *Selector) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.Conn, error) {
 	c, err := s.selectedProxy(true).DialContext(ctx, metadata, s.Base.DialOptions(opts...)...)

adapter/outboundgroup/urltest.go

@@ -35,10 +35,6 @@ type URLTest struct {
 	failedTime  *atomic.Int64
 }
 
-func (u *URLTest) IsProxyGroup() bool {
-	return true
-}
-
 func (u *URLTest) Now() string {
 	return u.fast(false).Name()
 }