perf annotate browser: Don't change the asm line color when toggling source

Gets confusing. Remains to be chosen an appropriate different color for
source code.

This effectively reverts 58e817d9 ("perf annotate: Print asm code as
blue when source code is displayed")
Requested-by: Peter Zijlstra <peterz@infradead.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-qy9iq32nj3uqe5dbiuq9e3j9@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/ui/browsers/annotate.c

@@ -81,9 +81,6 @@ static void annotate_browser__write(struct ui_browser *self, void *entry, int ro
 	if (!self->navkeypressed)
 		width += 1;
 
-	if (dl->offset != -1 && change_color)
-		ui_browser__set_color(self, HE_COLORSET_CODE);
-
 	if (!*dl->line)
 		slsmg_write_nstring(" ", width - 7);
 	else if (dl->offset == -1) {