test: remove semiocolons.
The ken directory is untouched so we have some examples with explicit semis.

R=gri
CC=golang-dev
https://golang.org/cl/2157041
diff --git a/test/sigchld.go b/test/sigchld.go
index 214e72b..09188fc 100644
--- a/test/sigchld.go
+++ b/test/sigchld.go
@@ -10,6 +10,6 @@
 import "syscall"
 
 func main() {
-	syscall.Kill(syscall.Getpid(), syscall.SIGCHLD);
-	println("survived SIGCHLD");
+	syscall.Kill(syscall.Getpid(), syscall.SIGCHLD)
+	println("survived SIGCHLD")
 }