tools/rv: Remove unneeded semicolon

The semicolon after the "}" is unneeded.

Link: https://lore.kernel.org/linux-trace-devel/202212191431057948891@zte.com.cn

Signed-off-by: zhang songyi <zhang.songyi@zte.com.cn>
Acked-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>