Clean up APEX library lists.

Make it more clear why they are listed, and sort lists for maintenance. This
mostly reorders lines, but also removes a few libraries that are pulled in
by dependencies and don't need to be mentioned explicitly. There should be
no functional differences.

Test: art/build/apex/runtests.sh
Bug: 124293228
Change-Id: I5bfb68892a5cbf77654af253c3b1efec034c16e2