Remove hidl support.

Merged from http://go/wvgerrit/161857

Test: streaming(Netflix, Play Movies & TV)
Test: ./build_and_run_all_unit_tests.sh
Test: adb shell ps | grep drm
Test: metrics_dump
Test: hardware/interfaces/drm/aidl/vts$ atest VtsAidlHalDrmTargetTest

Bug: 259299992
Change-Id: I76bcc82bbfb3fc60987b66265a580946a16c341d

libwvdrmengine/cdm/test/unit-test.mk

@@ -6,15 +6,6 @@ $(call assert-not-null,test_name)
 
 include $(CLEAR_VARS)
 
-WV_UNITTESTS_BUILD_TARGET?=
-ifeq ($(WV_UNITTESTS_BUILD_TARGET), hidl)
-HIDL_EXTENSION := _hidl
-LIB_BINDER := libhidlbase
-else
-HIDL_EXTENSION :=
-LIB_BINDER := libbinder_ndk
-endif
-
 LOCAL_MODULE := $(test_name)
 LOCAL_LICENSE_KINDS := legacy_by_exception_only
 LOCAL_LICENSE_CONDITIONS := by_exception_only
@@ -52,7 +43,7 @@ LOCAL_C_INCLUDES += external/protobuf/src
 LOCAL_STATIC_LIBRARIES := \
     libcdm \
     libcdm_protos \
-    libcdm_utils$(HIDL_EXTENSION) \
+    libcdm_utils \
     libjsmn \
     libgmock \
     libgtest \
@@ -63,8 +54,7 @@ LOCAL_SHARED_LIBRARIES := \
     libbase \
     libcrypto \
     libdl \
-    libhidlbase \
-    $(LIB_BINDER) \
+    libbinder_ndk \
     liblog \
     libmedia_omx \
     libprotobuf-cpp-lite \