perf tools: Remove needless thread_map.h include directives

Now that thread_map.h isn't included by any other header, we can check where
it is really needed, i.e. we can remove it and be sure that it isn't
being obtained indirectly.

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-fyzvg64cz1ikvyxp8d6nrhz1@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/arch/arm/util/cs-etm.c

@@ -24,7 +24,6 @@
 #include "../../util/evlist.h"
 #include "../../util/evsel.h"
 #include "../../util/pmu.h"
-#include "../../util/thread_map.h"
 #include "../../util/cs-etm.h"
 #include "../../util/util.h"