Remove AndroidKeyStoreFactory now as it's not used anymore

Test: adb shell am instrument -w -e package
com.android.server.locksettings.recoverablekeystore
com.android.frameworks.servicestests/android.support.test.runner.AndroidJUnitRunner

Change-Id: I15f19fb41cc952561601d2ca2b845d1ec8ba0671
1 file changed