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/switch1.go b/test/switch1.go
index 9e61cc6..5bd9d7c 100644
--- a/test/switch1.go
+++ b/test/switch1.go
@@ -9,12 +9,12 @@
 import "os"
 
 func main() {
-	i := 0;
+	i := 0
 	switch x := 5; {
 		case i < x:
-			os.Exit(0);
+			os.Exit(0)
 		case i == x:
 		case i > x:
-			os.Exit(1);
+			os.Exit(1)
 	}
 }