Remove dead syscall.h include

Bug: 1096193
Change-Id: Iaed7871cfec18a748db29296e93a932558fd5610
diff --git a/src/time/gettimeofday.c b/src/time/gettimeofday.c
index 691f8e9..6fc8895 100644
--- a/src/time/gettimeofday.c
+++ b/src/time/gettimeofday.c
@@ -1,6 +1,5 @@
 #include <time.h>
 #include <sys/time.h>
-#include "syscall.h"
 
 int gettimeofday(struct timeval *restrict tv, void *restrict tz)
 {