hotfix(openvpn): revert "feat(openvpn): reduce handshake window to 10 seconds for faster failure detection"

This reverts commit f615e3c780.

internal/provider/custom/openvpnconf.go

@@ -76,7 +76,6 @@ func modifyConfig(lines []string, connection models.Connection,
 	modified = append(modified, "pull-filter ignore \"auth-token\"") // prevent auth failed loop
 	modified = append(modified, "auth-retry nointeract")
 	modified = append(modified, "suppress-timestamps")
-	modified = append(modified, "handshake-window 10") // default is 60 seconds which is too long
 	if *settings.User != "" {
 		modified = append(modified, "auth-user-pass "+openvpn.AuthConf)
 	}

internal/provider/custom/openvpnconf_test.go

@@ -62,7 +62,6 @@ func Test_modifyConfig(t *testing.T) {
 				"pull-filter ignore \"auth-token\"",
 				"auth-retry nointeract",
 				"suppress-timestamps",
-				"handshake-window 10",
 				"auth-user-pass /etc/openvpn/auth.conf",
 				"verb 0",
 				"data-ciphers-fallback cipher",