perf tools: Remove unused xyarray.c as it was moved to tools/lib/perf

Migrated to libperf in:

4b247fa7314ce482 ("libperf: Adopt xyarray class from perf")

Signed-off-by: Ian Rogers <[e-mail]>
Acked-by: Jiri Olsa <[e-mail]>
Cc: Alexander Shishkin <[e-mail]>
Cc: Mark Rutland <[e-mail]>
Cc: Namhyung Kim <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Cc: Stephane Eranian <[e-mail]>
Link: http://lore.kernel.org/lkml/[e-mail]
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/util/xyarray.c

···
-// SPDX-License-Identifier: GPL-2.0
-#include "xyarray.h"
-#include <stdlib.h>
-#include <string.h>
-#include <linux/zalloc.h>
-
-struct xyarray *xyarray__new(int xlen, int ylen, size_t entry_size)
-{
-	size_t row_size = ylen * entry_size;
-	struct xyarray *xy = zalloc(sizeof(*xy) + xlen * row_size);
-
-	if (xy != NULL) {
-		xy->entry_size = entry_size;
-		xy->row_size   = row_size;
-		xy->entries    = xlen * ylen;
-		xy->max_x      = xlen;
-		xy->max_y      = ylen;
-	}
-
-	return xy;
-}
-
-void xyarray__reset(struct xyarray *xy)
-{
-	size_t n = xy->entries * xy->entry_size;
-
-	memset(xy->contents, 0, n);
-}
-
-void xyarray__delete(struct xyarray *xy)
-{
-	free(xy);
-}