Fix jenkins/opk_optee after v17 merge

[ Merge of http://go/wvgerrit/145349 ]

- Remove wvcdm namespace from test_clock.cpp

Bug: 224375138
Test: GtsMediaTestCases on sunfish
Change-Id: I239b692fd2103bd3d0626a145e99fc688c446256

libwvdrmengine/cdm/util/test/test_clock.cpp

@@ -13,7 +13,7 @@ namespace wvutil {
 
 namespace {
 // A fake clock that only advances when TestSleep::Sleep is called.
-class FakeClock : public wvcdm::TestSleep::CallBack {
+class FakeClock : public TestSleep::CallBack {
  public:
   FakeClock() {
     auto now = std::chrono::system_clock().now();
@@ -34,7 +34,7 @@ FakeClock* g_fake_clock = nullptr;
 
 // On devices running a fake OEMCrypto, we can use a fake sleep and fake time.
 int64_t Clock::GetCurrentTime() {
-  wvcdm::TestSleep::SyncFakeClock();
+  TestSleep::SyncFakeClock();
   if (g_fake_clock == nullptr) g_fake_clock = new FakeClock();
   return g_fake_clock->now() / 1000;
 }