Remove incorrect statement from docs

This change removes reference to the no longer used allowUpdateOwnership manifest attribute.

Change-Id: I03c0581053036c2ea649eb4d2a77dcd39afc636b
Test: N/A (doc only change)
Fixes: 281898063
Bug: 281898063

core/java/android/content/pm/PackageInstaller.java

@@ -3045,10 +3045,6 @@ public class PackageInstaller {
          * The update ownership enforcement can only be enabled on initial installation. Set
          * this to {@code true} on package update is a no-op.
          *
-         * Apps may opt themselves out of update ownership by setting the
-         * <a href="https://developer.android.com/guide/topics/manifest/manifest-element.html#allowupdateownership">android:alllowUpdateOwnership</a>
-         * attribute in their manifest to <code>false</code>.
-         *
          * Note: To enable the update ownership enforcement, the installer must have the
          * {@link android.Manifest.permission#ENFORCE_UPDATE_OWNERSHIP ENFORCE_UPDATE_OWNERSHIP}
          * permission.