Replace IpClientNetlinkMonitor.clearAlarms with cancelPref64Alarm.

Bug: 318764217
Test: TH
Change-Id: I214b9bdfeffc902b2290f050126ec500ddc1bf53
diff --git a/src/android/net/ip/IpClientLinkObserver.java b/src/android/net/ip/IpClientLinkObserver.java
index c606539..fc068da 100644
--- a/src/android/net/ip/IpClientLinkObserver.java
+++ b/src/android/net/ip/IpClientLinkObserver.java
@@ -403,7 +403,7 @@
         // while interfaceDnsServerInfo() is being called, we'll end up with no DNS servers in
         // mLinkProperties, as desired.
         mDnsServerRepository = new DnsServerRepository(mConfig.minRdnssLifetime);
-        mNetlinkMonitor.clearAlarms();
+        cancelPref64Alarm();
         mLinkProperties.clear();
         mLinkProperties.setInterfaceName(mInterfaceName);
     }
@@ -488,10 +488,6 @@
         protected boolean isRunning() {
             return super.isRunning();
         }
-
-        void clearAlarms() {
-            cancelPref64Alarm();
-        }
     }
 
     private final AlarmManager.OnAlarmListener mExpirePref64Alarm = () -> {