[Test] verifier_failures doesn't need stdlib.

Author: nate-chandler

test/SIL/verifier_failures.sil

@@ -4,13 +4,12 @@
 sil_stage canonical
 
 import Builtin
-import Swift
-import SwiftShims
 
 class C {}
 
-// CHECK:      Begin Error in function end_borrow_1_addr_alloc_stack
-// CHECK-NEXT: SIL verification failed: end_borrow of an address not produced by store_borrow
+// CHECK-LABEL: Begin Error in function end_borrow_1_addr_alloc_stack
+// CHECK:       SIL verification failed: end_borrow of an address not produced by store_borrow
+// CHECK-LABEL: End Error in function end_borrow_1_addr_alloc_stack
 sil [ossa] @end_borrow_1_addr_alloc_stack : $@convention(thin) () -> () {
   %addr = alloc_stack $C
   end_borrow %addr : $*C