Remove references of VtsHalHidlTargetTestBase

Bug: 147894326
Test: build
Change-Id: If847cc3aa5bb17682b92266f5460efe9d3fadfab
diff --git a/tv/tuner/1.0/vts/functional/FrontendTests.h b/tv/tuner/1.0/vts/functional/FrontendTests.h
index 701be82..1a9bec9 100644
--- a/tv/tuner/1.0/vts/functional/FrontendTests.h
+++ b/tv/tuner/1.0/vts/functional/FrontendTests.h
@@ -14,8 +14,6 @@
  * limitations under the License.
  */
 
-#include <VtsHalHidlTargetTestBase.h>
-#include <VtsHalHidlTargetTestEnvBase.h>
 #include <android-base/logging.h>
 #include <android/hardware/tv/tuner/1.0/IFrontend.h>
 #include <android/hardware/tv/tuner/1.0/IFrontendCallback.h>
@@ -66,6 +64,8 @@
 
 using ::testing::AssertionResult;
 
+using namespace std;
+
 #define INVALID_ID -1
 #define WAIT_TIMEOUT 3000000000