Migrate frameworks/opt/telephony to androidx.test

See go/jetpack-test-android-migration

Test: compile
Change-Id: I56c5a2aee7f36158909a3363419955601608f0c8
Merged-In: I54935b2665a54474e3f4e833f9c3fd90cd5e0726
diff --git a/tests/telephonytests/AndroidTest.xml b/tests/telephonytests/AndroidTest.xml
index 74b2799..c3a405b 100644
--- a/tests/telephonytests/AndroidTest.xml
+++ b/tests/telephonytests/AndroidTest.xml
@@ -22,7 +22,7 @@
     <option name="test-tag" value="FrameworksTelephonyTests" />
     <test class="com.android.tradefed.testtype.AndroidJUnitTest" >
         <option name="package" value="com.android.frameworks.telephonytests" />
-        <option name="runner" value="android.support.test.runner.AndroidJUnitRunner" />
+        <option name="runner" value="androidx.test.runner.AndroidJUnitRunner" />
         <option name="hidden-api-checks" value="false"/>
     </test>
 </configuration>