Frameworks: Remove AsyncTask from preloaded-classes

Bug: 113624968
Test: m
Change-Id: I77be78138f13fdc6d3a26aea3f59d01ef0e745e8

config/preloaded-classes

@@ -2381,7 +2381,6 @@ android.os.-$$Lambda$StrictMode$lu9ekkHJ2HMz0jd3F8K8MnhenxQ
 android.os.-$$Lambda$StrictMode$yZJXPvy2veRNA-xL_SWdXzX_OLg
 android.os.-$$Lambda$Trace$2zLZ-Lc2kAXsVjw_nLYeNhqmGq0
 android.os.AsyncResult
-android.os.AsyncTask
 android.os.AsyncTask$1
 android.os.AsyncTask$2
 android.os.AsyncTask$3

config/preloaded-classes-blacklist

@@ -1,4 +1,5 @@
 android.net.ConnectivityThread$Singleton
+android.os.AsyncTask
 android.os.FileObserver
 android.widget.Magnifier
 sun.nio.fs.UnixChannelFactory