perf test: Fix "PMU event table sanity" for NO_JEVENTS=1

A table was renamed and needed to be renamed in the empty case.

Fixes: 62774db2 ("perf jevents: Generate metrics and events as separate tables")
Reviewed-by: John Garry <john.g.garry@oracle.com>
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20230308002714.1755698-1-irogers@google.com


Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>