Partial backport: Fix makefile warnings.

Test: it builds.
Bug: b/37159108
Change-Id: Icaad7e1f0fdab542f2f78c779def64ef57a3bc42
Merged-In: Icaad7e1f0fdab542f2f78c779def64ef57a3bc42
diff --git a/tests/tests/telecom3/Android.mk b/tests/tests/telecom3/Android.mk
index d88ec9a..4b4a896 100644
--- a/tests/tests/telecom3/Android.mk
+++ b/tests/tests/telecom3/Android.mk
@@ -29,8 +29,7 @@
 src_dirs := src \
     ../telecom/src/android/telecom/cts/SelfManagedConnection.java \
     ../telecom/src/android/telecom/cts/CtsSelfManagedConnectionService.java \
-    ../telecom/src/android/telecom/cts/TestUtils.java \
-    ../telecom/src/android/telecom/cts/MockDialerActivity.java
+    ../telecom/src/android/telecom/cts/TestUtils.java
 
 res_dirs := ../telecom/res