/vendor/lib/hw is removed from search paths for vendor default ns

Shared libraries in the directory should be dlopened with full file
paths. That was a workaround for some legacy prebuilt binaries and they
are all now fixed. Thus removing.

Bug: 70551668
Test: walleye, aosp_walleye, taimen, aosp_taimen boot to the UI

Change-Id: Ifb123b09c13f873cbefa7784e76dfe5f35575a8d