Remove duplicated widget host view reinflation on screen rotation

Don't reinflate from LauncherAppWidgetHostView#onConfigurat#onConfigurationChanged because Launcher activity will rebind app widgets on configuraiton change. This will reduce lock contention to inflate complex widget views and reduce flicker.

Bug: 285279824
Flag: None
Test: Rotate screen and verify widget are rendered correctly
Change-Id: I69abc7f1fe0ca5704ac887142c73b8d245fead4e