go: Clean .nancy-ignore

Author: peternose

go/.nancy-ignore

@@ -1,4 +1 @@
-CVE-2024-34478 # can be ignored as we only use a few crypto libraries from btcd
-CVE-2025-4673 until=2025-07-14  # no mitigation is currently available (2025-06-14)
 CVE-2021-43668 # the vulnerability does not affect us as we don't use LevelDB
-CVE-2025-11065 until=2025-12-01 # the vulnerability does not affect us