Remove unnecessary check for skDestroyListener

skDestroyListener is always running with Java code so removed the
unnecessary check.

Bug: 217624062
Test: TH

Change-Id: Ie1a36c3c736005ec4821c5e9c9983998f7042afa
diff --git a/service-t/src/com/android/server/net/NetworkStatsService.java b/service-t/src/com/android/server/net/NetworkStatsService.java
index 46afd31..804e709 100644
--- a/service-t/src/com/android/server/net/NetworkStatsService.java
+++ b/service-t/src/com/android/server/net/NetworkStatsService.java
@@ -640,12 +640,8 @@
         // on the experiment flag, BpfNetMaps starts C SkDestroyListener (existing code) or
         // NetworkStatsService starts Java SkDestroyListener (new code).
         final BpfNetMaps bpfNetMaps = mDeps.makeBpfNetMaps(mContext);
-        if (bpfNetMaps.isSkDestroyListenerRunning()) {
-            mSkDestroyListener = null;
-        } else {
-            mSkDestroyListener = mDeps.makeSkDestroyListener(mCookieTagMap, mHandler);
-            mHandler.post(mSkDestroyListener::start);
-        }
+        mSkDestroyListener = mDeps.makeSkDestroyListener(mCookieTagMap, mHandler);
+        mHandler.post(mSkDestroyListener::start);
     }
 
     /**
diff --git a/service/src/com/android/server/BpfNetMaps.java b/service/src/com/android/server/BpfNetMaps.java
index d1218a2..3dec6cc 100644
--- a/service/src/com/android/server/BpfNetMaps.java
+++ b/service/src/com/android/server/BpfNetMaps.java
@@ -272,10 +272,6 @@
         sInitialized = true;
     }
 
-    public boolean isSkDestroyListenerRunning() {
-        return false;
-    }
-
     /**
      * Dependencies of BpfNetMaps, for injection in tests.
      */