cargo-deny: Cleanup the ignore list for advisories

This exception isn't required anymore since we finally got rid of the
old `time 0.1.x` dependency in b8e0579.
(-> the list is finally empty, as it should be \o/)

Signed-off-by: Michael Weiss <michael.weiss@atos.net>

deny.toml

@@ -64,10 +64,4 @@ skip-tree = [
 
 [advisories]
 ignore = [
-    # "Potential segfault in the time crate"
-    #
-    # Patches available, but as "time-rs" is not a direct dependency, we cannot
-    # do anything here
-    "RUSTSEC-2020-0071",
 ]
-