Remove AppCompat from TouchLatency test

Ensure the TouchLatency test accurately reflects the latest
framework and removes the need to update TouchLatency test
as Support Library evolves.

Test: ./gradlew assembleDebug works
BUG: 28983951
Change-Id: Icce773f47674f94cad5f9057cce4913b7efce834
diff --git a/tests/TouchLatency/Android.mk b/tests/TouchLatency/Android.mk
index 6ad4705..969283d 100644
--- a/tests/TouchLatency/Android.mk
+++ b/tests/TouchLatency/Android.mk
@@ -8,19 +8,11 @@
 # omit gradle 'build' dir
 LOCAL_SRC_FILES := $(call all-java-files-under,app/src/main/java)
 
-# use appcompat/support lib from the tree, so improvements/
-# regressions are reflected in test data
 LOCAL_RESOURCE_DIR := \
-    $(LOCAL_PATH)/app/src/main/res \
-    frameworks/support/v7/appcompat/res
+    $(LOCAL_PATH)/app/src/main/res
 
 LOCAL_AAPT_FLAGS := \
-    --auto-add-overlay \
-    --extra-packages android.support.v7.appcompat
-
-LOCAL_STATIC_JAVA_LIBRARIES := \
-    android-support-v4 \
-    android-support-v7-appcompat
+    --auto-add-overlay
 
 LOCAL_PACKAGE_NAME := TouchLatency