[openwrt/openwrt] 6rd : remove 6rd tunnel delete workaround

[LEDE Commits]

dedeckeh pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/c4d292969fb0ebf0dbbadca3e479dae8b33eda71

commit c4d292969fb0ebf0dbbadca3e479dae8b33eda71
Author: Hans Dedecker <dedeckeh at gmail.com>
AuthorDate: Sat Oct 30 20:56:48 2021 +0200

    6rd : remove 6rd tunnel delete workaround
    
    Remove 6rd tunnel delete workaround in as the real issue
    is now solved in netifd
    (https://git.openwrt.org/?p=project/netifd.git;a=commit;h=8f82742ca4f47f459284f3a07323d04da72ea5f6)
    
    Signed-off-by: Hans Dedecker <dedeckeh at gmail.com>
---
 package/network/ipv6/6rd/Makefile     | 2 +-
 package/network/ipv6/6rd/files/6rd.sh | 2 --
 2 files changed, 1 insertion(+), 3 deletions(-)

diff --git a/package/network/ipv6/6rd/Makefile b/package/network/ipv6/6rd/Makefile
index f9c4c6f7a5..e2ca4e1200 100644
--- a/package/network/ipv6/6rd/Makefile
+++ b/package/network/ipv6/6rd/Makefile
@@ -8,7 +8,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=6rd
-PKG_RELEASE:=11
+PKG_RELEASE:=12
 PKG_LICENSE:=GPL-2.0
 
 include $(INCLUDE_DIR)/package.mk
diff --git a/package/network/ipv6/6rd/files/6rd.sh b/package/network/ipv6/6rd/files/6rd.sh
index 3c913e54f1..62a20314d9 100644
--- a/package/network/ipv6/6rd/files/6rd.sh
+++ b/package/network/ipv6/6rd/files/6rd.sh
@@ -82,8 +82,6 @@ proto_6rd_setup() {
 
 proto_6rd_teardown() {
 	local cfg="$1"
-	local link="6rd-$cfg"
-	ip link del $link
 }
 
 proto_6rd_init_config() {