perf annotate: Make annotation_line__max_percent static

There's no outside user of it.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/20180804130521.11408-3-jolsa@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/annotate.c

@@ -2441,7 +2441,8 @@ bool ui__has_annotation(void)
 }
 
 
-double annotation_line__max_percent(struct annotation_line *al, struct annotation *notes)
+static double annotation_line__max_percent(struct annotation_line *al,
+					   struct annotation *notes)
 {
 	double percent_max = 0.0;
 	int i;

tools/perf/util/annotate.h

@@ -169,7 +169,6 @@ struct annotation_write_ops {
 	void (*write_graph)(void *obj, int graph);
 };
 
-double annotation_line__max_percent(struct annotation_line *al, struct annotation *notes);
 void annotation_line__write(struct annotation_line *al, struct annotation *notes,
 			    struct annotation_write_ops *ops);