[Fast-boot] Clear teamd-timer when finalizing fast-reboot (#14583)

Part of sonic-net/sonic-utilities#2760
Similar to #14295

- Why I did it
To clear teamd timer when fast-reboot is finalized to prevent any further affect.

- How I did it
Deleted teamd timer from config-db in fast-reboot finalizer.
config save call is moved to after clearing teamd-timer so it won't have any further affect as well.

- How to verify it
Verified manually that entry was deleted after fast-reboot was finailized.

files/image_config/warmboot-finalizer/finalize-warmboot.sh

@@ -112,6 +112,7 @@ function finalize_fast_reboot()
 {
     debug "Finalizing fast-reboot..."
     sonic-db-cli STATE_DB hset "FAST_RESTART_ENABLE_TABLE|system" "enable" "false" &>/dev/null
+    sonic-db-cli CONFIG_DB DEL "WARM_RESTART|teamd" &>/dev/null
 }
 
 function stop_control_plane_assistant()
@@ -170,10 +171,6 @@ if [[ (x"${WARM_BOOT}" == x"true") && (x"${FAST_REBOOT}" != x"true") ]]; then
    stop_control_plane_assistant
 fi
 
-# Save DB after stopped control plane assistant to avoid extra entries
-debug "Save in-memory database after warm/fast reboot ..."
-config save -y
-
 if [[ -n "${list}" ]]; then
     debug "Some components didn't finish reconcile: ${list} ..."
 fi
@@ -184,4 +181,8 @@ fi
 
 if [ x"${WARM_BOOT}" == x"true" ]; then
     finalize_warm_boot
-fi
+fi
+
+# Save DB after stopped control plane assistant to avoid extra entries
+debug "Save in-memory database after warm/fast reboot ..."
+config save -y