Remove setting net.Conn Deadlines as its not needed anymore (#8269)

This commit fixes a bug introduced in af6c6a2b35.

Setting deadlines in Go results in arbitrary hangs as reported here
https://github.com/golang/go/issues/34385

Fixes https://github.com/minio/minio/issues/7852

cmd/http/server.go

@@ -39,12 +39,6 @@ const (
 	// DefaultTCPKeepAliveTimeout - default TCP keep alive timeout for accepted connection.
 	DefaultTCPKeepAliveTimeout = 30 * time.Second
 
-	// DefaultReadTimeout - default timout to read data from accepted connection.
-	DefaultReadTimeout = 5 * time.Minute
-
-	// DefaultWriteTimeout - default timout to write data to accepted connection.
-	DefaultWriteTimeout = 5 * time.Minute
-
 	// DefaultMaxHeaderBytes - default maximum HTTP header size in bytes.
 	DefaultMaxHeaderBytes = 1 * humanize.MiByte
 )
@@ -53,8 +47,6 @@ const (
 type Server struct {
 	http.Server
 	Addrs                  []string      // addresses on which the server listens for new connection.
-	ReadTimeout            time.Duration // timeout used for net.Conn.Read() deadlines.
-	WriteTimeout           time.Duration // timeout used for net.Conn.Write() deadlines.
 	ShutdownTimeout        time.Duration // timeout used for graceful server shutdown.
 	TCPKeepAliveTimeout    time.Duration // timeout used for underneath TCP connection.
 	UpdateBytesReadFunc    func(int)     // function to be called to update bytes read in bufConn.
@@ -77,8 +69,6 @@ func (srv *Server) Start() (err error) {
 	if srv.TLSConfig != nil {
 		tlsConfig = srv.TLSConfig.Clone()
 	}
-	readTimeout := srv.ReadTimeout
-	writeTimeout := srv.WriteTimeout
 	handler := srv.Handler // if srv.Handler holds non-synced state -> possible data race
 
 	addrs := set.CreateStringSet(srv.Addrs...).ToSlice() // copy and remove duplicates
@@ -89,8 +79,6 @@ func (srv *Server) Start() (err error) {
 	listener, err = newHTTPListener(
 		addrs,
 		tcpKeepAliveTimeout,
-		readTimeout,
-		writeTimeout,
 		srv.UpdateBytesReadFunc,
 		srv.UpdateBytesWrittenFunc,
 	)
@@ -213,8 +201,6 @@ func NewServer(addrs []string, handler http.Handler, getCert certs.GetCertificat
 	}
 	httpServer.Handler = handler
 	httpServer.TLSConfig = tlsConfig
-	httpServer.ReadTimeout = DefaultReadTimeout
-	httpServer.WriteTimeout = DefaultWriteTimeout
 	httpServer.MaxHeaderBytes = DefaultMaxHeaderBytes
 
 	return httpServer