perf ilist: Don't display deprecated events

Unsupported legacy events are flagged as deprecated. Don't display
these events in ilist as they won't open and there are over 1,000
legacy cache events.

Signed-off-by: Ian Rogers <irogers@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>

Author: captain5050

tools/perf/python/ilist.py

@@ -439,6 +439,8 @@ def metric_event_tree() -> Tree:
                 pmu_node = pmus.add(pmu_name)
                 try:
                     for event in sorted(pmu.events(), key=lambda x: x["name"]):
+                        if "deprecated" in event:
+                            continue
                         if "name" in event:
                             e = event["name"].lower()
                             if "alias" in event: