perf evsel: Remove needless counts.h header from util/evsel.h

We need only a struct forward declaration, so prune the header
dependency tree a bit more.

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-oqvgf04w4ku8xasrz79zquim@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/evsel.c

@@ -26,6 +26,7 @@
 #include "asm/bug.h"
 #include "callchain.h"
 #include "cgroup.h"
+#include "counts.h"
 #include "event.h"
 #include "evsel.h"
 #include "evlist.h"

tools/perf/util/evsel.h

@@ -11,7 +11,6 @@
 #include <perf/evsel.h>
 #include "symbol_conf.h"
 #include "cpumap.h"
-#include "counts.h"
 
 struct evsel;
 
@@ -93,6 +92,7 @@ enum perf_tool_event {
 };
 
 struct bpf_object;
+struct perf_counts;
 struct xyarray;
 
 /** struct evsel - event selector