Update added tests to require objec interop

Author: zoecarver

test/SILOptimizer/devirtualize_protocol_composition.swift

@@ -1,6 +1,8 @@
 // RUN: %target-swift-frontend -parse-as-library -O -wmo -emit-sil  %s | %FileCheck %s
 // RUN: %target-swift-frontend -parse-as-library -Osize -wmo -emit-sil  %s | %FileCheck %s
 
+// REQUIRES: objc_interop
+
 // This is an end-to-end test to ensure that the optimizer devertualizes
 // calls to a protocol composition type.
 

test/SILOptimizer/devirtualize_protocol_composition_two_stores.sil

@@ -1,5 +1,7 @@
 // RUN: %target-sil-opt -O -wmo -enable-sil-verify-all %s | %FileCheck %s
 
+// REQUIRES: objc_interop
+
 sil_stage canonical
 
 import Builtin