Refactor: remove --apex-info-file arg to checkvintf

Now, checkvintf finds input file from dirmaps. We don't need to pass
around --apex-info-file.

dump_apex_info also generates files under /apex without an explicit
--out_file argument.

This makes "make" know less about coupling between dump_apex_info
and checkvintf.

Bug: 260310732
Test: manually run check_target_files_vintf -v target-files
Change-Id: Ibfe31978e983e13df35c32521913d5cbc89dc1d1