DO NOT MERGE: re-enable ConnectivityManagerTest in mainline-prod.

Bug: 167645754
Ignore-AOSP-First: test is already enabled in AOSP
Test: atest CtsNetTestCasesLatestSdk passes on R device
Change-Id: I9677518a6a43bf3195e42ba21291a84846e31f14
diff --git a/tests/cts/net/Android.bp b/tests/cts/net/Android.bp
index 24710f1..2a710c1 100644
--- a/tests/cts/net/Android.bp
+++ b/tests/cts/net/Android.bp
@@ -40,8 +40,6 @@
         "src/**/*.kt",
     ],
     exclude_srcs: [
-        // STOPSHIP: delete this before releasing any networking modules.
-        "src/android/net/cts/ConnectivityManagerTest.java",
         // TODO: delete this after mainline-prod snaps to sc-dev.
         "src/android/net/cts/NetworkAgentTest.kt",
     ],