perf: event: Remove deadcode

perf: event: Remove deadcode

event_format__print() last use was removed by 2017's
commit 894f3f1732cb ("perf script: Use event_format__fprintf()")

evlist__find_tracepoint_by_id() last use was removed by 2012's
commit e60fc847cefa ("perf evlist: Remove some unused methods")

evlist__set_tp_filter_pid() last use was removed by 2017's
commit dd1a50377c92 ("perf trace: Introduce filter_loop_pids()")

Remove them.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Reviewed-by: Ian Rogers <irogers@google.com>
Link: https://lore.kernel.org/r/20241106144826.91728-1-linux@treblig.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>