perf annotate: Remove disasm__calc_percent() from annotate_browser__calc_percent()

perf annotate: Remove disasm__calc_percent() from annotate_browser__calc_percent()

Remove disasm__calc_percent() from annotate_browser__calc_percent(),
because we already have the data calculated in struct annotation_line.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20171011150158.11895-21-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>