perf record: Remove -A/--append option

It's no longer working and needed.

Quite straightforward discussion/vote was in here:
http://marc.info/?t=137028288300004&r=1&w=2

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-8fgdva12hl8w3xzzpsvvg7nx@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 738d3b8..93dd315 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -2303,29 +2303,18 @@
 	struct perf_file_header f_header;
 	struct perf_file_attr   f_attr;
 	struct perf_header *header = &session->header;
-	struct perf_evsel *evsel, *pair = NULL;
+	struct perf_evsel *evsel;
 	int err;
 
 	lseek(fd, sizeof(f_header), SEEK_SET);
 
-	if (session->evlist != evlist)
-		pair = perf_evlist__first(session->evlist);
-
 	list_for_each_entry(evsel, &evlist->entries, node) {
 		evsel->id_offset = lseek(fd, 0, SEEK_CUR);
 		err = do_write(fd, evsel->id, evsel->ids * sizeof(u64));
 		if (err < 0) {
-out_err_write:
 			pr_debug("failed to write perf header\n");
 			return err;
 		}
-		if (session->evlist != evlist) {
-			err = do_write(fd, pair->id, pair->ids * sizeof(u64));
-			if (err < 0)
-				goto out_err_write;
-			evsel->ids += pair->ids;
-			pair = perf_evsel__next(pair);
-		}
 	}
 
 	header->attr_offset = lseek(fd, 0, SEEK_CUR);