TBR renaming v.io/core/veyron to v.io/x/ref

(and getting rid of unused shell scripts)

MultiPart: 5/13
Change-Id: I09d9df0f4dc7df3d5ca5588513be27b08fe1fd4a
diff --git a/profiles/fake/runtime.go b/profiles/fake/runtime.go
index 19640e5..6a2e458 100644
--- a/profiles/fake/runtime.go
+++ b/profiles/fake/runtime.go
@@ -8,7 +8,7 @@
 	"v.io/v23/context"
 	"v.io/v23/security"
 
-	tsecurity "v.io/core/veyron/lib/testutil/security"
+	tsecurity "v.io/x/ref/lib/testutil/security"
 )
 
 type contextKey int