[pm] remove SharedUserSetting from PackageSetting

Test: atest com.android.server.pm.AppsFilterTest
Test: atest com.android.server.pm.PackageManagerSettingsTests
Test: atest com.android.server.pm.SharedLibrariesImplTest
Test: atest com.android.server.pm.PackageManagerTests
BUG: 216207402
Change-Id: I7e321ee25f35e46ec0e21672e5b932e749de52e9
27 files changed