Remove reference of VtsHalHidlTargetTestBase

All grahpics composer HAL tests have been converted to parameterized
gtest.

Bug: 147894326
Test: atest VtsHalGraphicsComposerV2_1TargetTest \
  VtsHalGraphicsComposerV2_2TargetTest \
  VtsHalGraphicsComposerV2_3TargetTest \
  VtsHalGraphicsComposerV2_4TargetTest

Change-Id: I84515a5698035d7ceb299a5cc140ecd7bb28fe84
diff --git a/graphics/composer/2.1/utils/vts/Android.bp b/graphics/composer/2.1/utils/vts/Android.bp
index cdc0f35..3b0911f 100644
--- a/graphics/composer/2.1/utils/vts/Android.bp
+++ b/graphics/composer/2.1/utils/vts/Android.bp
@@ -23,14 +23,13 @@
         "TestCommandReader.cpp",
     ],
     static_libs: [
-        "VtsHalHidlTargetTestBase",
         "android.hardware.graphics.composer@2.1",
         "android.hardware.graphics.mapper@2.0-vts",
         "android.hardware.graphics.mapper@3.0-vts",
         "android.hardware.graphics.mapper@4.0-vts",
+        "libgtest",
     ],
     export_static_lib_headers: [
-        "VtsHalHidlTargetTestBase",
         "android.hardware.graphics.composer@2.1",
         "android.hardware.graphics.mapper@2.0-vts",
         "android.hardware.graphics.mapper@3.0-vts",