Fixed the incorrect debug message

Test: Build
Change-Id: Ib1812d25a14637da372a688ffb83a8038cc64745
diff --git a/src/com/android/cellbroadcastservice/CellBroadcastHandler.java b/src/com/android/cellbroadcastservice/CellBroadcastHandler.java
index b3c9d4e..f1655a9 100644
--- a/src/com/android/cellbroadcastservice/CellBroadcastHandler.java
+++ b/src/com/android/cellbroadcastservice/CellBroadcastHandler.java
@@ -201,7 +201,7 @@
                                 boolean airplaneModeOn = intent.getBooleanExtra("state", false);
                                 if (airplaneModeOn) {
                                     mLastAirplaneModeTime = System.currentTimeMillis();
-                                    log("Airplane mode on. Reset duplicate detection.");
+                                    log("Airplane mode on.");
                                 }
                                 break;
                             case ACTION_DUPLICATE_DETECTION: