disable option does not remove tests previously added to command line with -e option

[brad-kelly]

If I use the -e option to specify some tests to run, andthen explicitly disable some subset with the --disable option I would expect those test to be removed, but they are not.

Simple example:

% opendcdiag -v --output-format=tap -e zlib --disable=zlib
# opendcdiag -v --output-format=tap -e zlib --disable=zlib
# Operating system: Linux 5.15.0-46-generic, glibc 2.35
ok   1 zlib                     # (alpha test)   <-- marked alpha??
...

Why is this important (simple use case):
If I want to run all the eigen tests except those with "double" in the name, I'd expect to do something like:
opendcdiag -v --output-format=tap -e eigen* --disable=*double*

Unfortunately this does not work:

% opendcdiag -v  --output-format=tap -e eigen* --disable=*double*
# opendcdiag -v  --output-format=tap -e eigen* --disable=*double*
# Operating system: Linux 5.15.0-46-generic, glibc 2.35
ok   1 eigen_gemm_double14      # (alpha test) 
ok   2 eigen_gemm_cdouble_dynamic_square# (alpha test) 
ok   3 eigen_gemm_double_dynamic_square# (alpha test) 
ok   4 eigen_gemm_float_dynamic_square
ok   5 eigen_sparse
ok   6 eigen_svd

[busykai]

So right now what --disable does is not actually remove the test from the prepared list of tests to run, but sets its quality level to SKIP. This results on the (alpha test) remark in the output above. While this may work in some cases, it does not work in many others, such as when --disable tries to remove a test from the test list file, or exclude some of the tests are enabled using wildcard, or in a simple case when --enable and --disable specify the same test.