Fix CMap unit tests

When the binary CMaps were added, some of the relevant unit tests were not changed. This patch updates them, so that we actually test the current implementation.
What's somewhat troubling here is that we currently have CMap unit tests that passes, *despite* not working as intended (the CMap files doesn't load).
Remove the remaining references to cidmaps.js from the test suite
Merge pull request #5185 from Snuffleupagus/fix-cmap-unittests

Fix CMap unit tests