perf pmu: Remove needless evsel.h include, only needs one fwd decl

To reduce the header dependency tree.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-rc389o1z0htwukqv6ni1viun@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/pmu.h

@@ -6,9 +6,10 @@
 #include <linux/compiler.h>
 #include <linux/perf_event.h>
 #include <stdbool.h>
-#include "evsel.h"
 #include "parse-events.h"
 
+struct perf_evsel_config_term;
+
 enum {
 	PERF_PMU_FORMAT_VALUE_CONFIG,
 	PERF_PMU_FORMAT_VALUE_CONFIG1,