Revert "兼容证书链不完整的订阅地址"

This reverts commit d927db5.

go.sum

@@ -1,5 +1,3 @@
-filippo.io/intermediates v0.0.0-20230818021045-f5dbec6a99ea h1:j4xi8pB16I4o1z7gXIVYLfrIPlYqJQUyeDsBhCfqVAw=
-filippo.io/intermediates v0.0.0-20230818021045-f5dbec6a99ea/go.mod h1:oFwJrtHxYeWR/Lhr/MC2TPSR+BsYpybldbpRKvSjggw=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/klauspost/cpuid/v2 v2.2.5 h1:0E5MSMDEoAulmXNFquVs//DdoomxaoTY1kUhbc/qbZg=

main.go

@@ -1,7 +1,6 @@
 package main
 
 import (
-	"crypto/tls"
 	_ "embed"
 	"fmt"
 	"net/http"
@@ -12,7 +11,6 @@ import (
 
 	"log/slog"
 
-	"filippo.io/intermediates"
 	"github.com/xmdhs/clash2sfa/db"
 	"github.com/xmdhs/clash2sfa/handle"
 	"github.com/xmdhs/clash2sfa/utils"
@@ -44,21 +42,13 @@ func main() {
 	level := &slog.LevelVar{}
 	level.Set(slog.Level(leveln))
 
+	c := &http.Client{}
 	l := slog.New(&warpSlogHandle{
 		Handler: slog.NewJSONHandler(os.Stderr, &slog.HandlerOptions{
 			Level: level,
 		}),
 	})
 
-	tr := http.DefaultTransport.(*http.Transport).Clone()
-	tr.TLSClientConfig = &tls.Config{
-		InsecureSkipVerify: true,
-		VerifyConnection:   intermediates.VerifyConnection,
-	}
-	c := &http.Client{
-		Timeout: 10 * time.Second,
-	}
-
 	mux := http.NewServeMux()
 	mux.HandleFunc("/put", handle.PutArg(db, l))
 	mux.HandleFunc("/sub", handle.Sub(c, db, configByte, l))