Use a.t.mock.stubs instead of a.t.mock.sdk

Remove dependencies on android.test.mock.sdk as it is a duplicate of
android.test.mock.stubs and will be removed.

The following change descriptions were generated automatically and so
may be a little repetitive. They are provided to give the reviewer
enough information to check the comments match what has actually been
changed and check the reasoning behind the changes.

* tests/Android.mk
    Replaced 'android.test.mock.sdk' with 'android.test.mock.stubs' in
    LOCAL_JAVA_LIBRARIES because android.test.mock.sdk has been
    deprecated.

Bug: 30188076
Test: make checkbuild
Change-Id: I50a306c3bb80a9d7cdf2d19744734f304abf3bd1
Merged-In: I50a306c3bb80a9d7cdf2d19744734f304abf3bd1
(cherry picked from commit 097130d1)

tests/Android.mk

@@ -28,7 +28,7 @@ LOCAL_STATIC_JAVA_LIBRARIES := \
     android-support-test \
     mockito-target-minus-junit4
 
-LOCAL_JAVA_LIBRARIES := android.test.mock.sdk legacy-android-test
+LOCAL_JAVA_LIBRARIES := android.test.mock.stubs legacy-android-test
 
 # Include all test java files.
 LOCAL_SRC_FILES := $(call all-java-files-under, src)