Remove dead code in networkstatus.c

We can't end up in the removed else {} condition since we first validate the
flavor we get and then we validate the flavor we parse from the given
consensus which means we can only handle the two flavors of the if/elseif
conditions.

Fixes #25914

Signed-off-by: David Goulet <dgoulet@torproject.org>

src/or/networkstatus.c

@@ -1841,17 +1841,9 @@ networkstatus_set_current_consensus(const char *consensus,
       current_valid_after = current_md_consensus->valid_after;
     }
   } else {
-    cached_dir_t *cur;
-    char buf[128];
-    tor_snprintf(buf, sizeof(buf), "cached-%s-consensus", flavor);
-    consensus_fname = get_cachedir_fname(buf);
-    tor_snprintf(buf, sizeof(buf), "unverified-%s-consensus", flavor);
-    unverified_fname = get_cachedir_fname(buf);
-    cur = dirserv_get_consensus(flavor);
-    if (cur) {
-      current_digests = &cur->digests;
-      current_valid_after = cur->published;
-    }
+    tor_assert_nonfatal_unreached();
+    result = -2;
+    goto done;
   }
 
   if (current_digests &&