NetworkStats - no need for xt_qtaguid clat bw fixups

This is due to the previous addition of the ip6tables raw PREROUTING
drop rules for incoming ipv6 clat traffic pre-translation to ipv4.

Since we no longer double account, we no longer need these fixups.

Test: atest bpf_module_test clatd_test libbpf_android_test libnetdbpf_test
  netd_integration_test netd_unit_test netdutils_test
Bug: 150738490
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: Ia171b7797cdc99367064d0649bf1293c71579941
Merged-In: Ia171b7797cdc99367064d0649bf1293c71579941