Remove implenents clause
Remove implenents clause

After https://googleplex-android-review.googlesource.com/#/c/231069/, SyncManager no longer needs to implement OnAccountsUpdateListener
Bug: 7197445

Change-Id: Icef4ff4488a69f7e9287390ceccbe63a879281e4

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base