apex_comparison_test.sh defines a helper function to clean up state on
exit, but in error conditions the call_bazel function is not always
defined.
Test: added an exit 1 statement below trap
Change-Id: I73b0c56c0a4a2d9ed1d4c0bf38b6ac0ac985e716
apex_diff_test targets were the last remaining dependents of make_injection. Rewriting them allows us to delete make_injection.
Test: CI
Change-Id: I928d8fe136d709b9f819c00c3127af66e720a7db