perf tools: Use default CPUINFO_PROC where it fits

Several architectures don't need to define it since the string is the
same as the default one, so nuke them.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-v1e1jr1u474w9xcelpaoxamu@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/header.c

@@ -380,9 +380,6 @@ done:
 static int write_cpudesc(struct feat_fd *ff,
 		       struct perf_evlist *evlist __maybe_unused)
 {
-#ifndef CPUINFO_PROC
-#define CPUINFO_PROC {"model name", }
-#endif
 	const char *cpuinfo_procs[] = CPUINFO_PROC;
 	unsigned int i;