test: purge stale disabled tests
There are many tests in the test/disabled
directory. These tests are not used by Makefile
nor by the CI. Other than a single 2015 commit that puts 'use strict'
in each test, many of them haven't been touched in years.
This removes all the disabled tests that have been unmodified since 2011 (with the exception of the 'use strict'
modification mentioned above).
I concede in advance that my main motive is a perhaps-misguided mission to eliminate every TODO
comment possible in the code base.