Remove aconfig storage files from next allolwlist

Bug: 369678122
Test: verified that these files do not appear in the `fileList` of
`generic_system_image` when building with TARGET_RELEASE=aosp_current
(more precisely, any release config which is not trunk_staging or
trunk)

Change-Id: Icf175df9846deb8b3e82b33469be890eb4b038f9