um: remove unneeded semicolon in um_arch.c

Fix following coccicheck warning:
./arch/um/kernel/um_arch.c:284:34-35: Unneeded semicolon

Signed-off-by: Wan Jiabing <wanjiabing@vivo.com>
Signed-off-by: Richard Weinberger <richard@nod.at>

arch/um/kernel/um_arch.c

diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c
index 20cce10..0a7eb10 100644
--- a/arch/um/kernel/um_arch.c
+++ b/arch/um/kernel/um_arch.c
@@ -280,7 +280,7 @@ static void parse_host_cpu_flags(char *line)
 	int i;
 	for (i = 0; i < 32*NCAPINTS; i++) {
 		if ((x86_cap_flags[i] != NULL) && strstr(line, x86_cap_flags[i]))
-			set_cpu_cap(&boot_cpu_data, i);;
+			set_cpu_cap(&boot_cpu_data, i);
 	}
 }
 static void parse_cache_line(char *line)