test: remove obsolete debugger tests
The tests in test/debugger
all fail since the removal of the
pre-inspector debugger (if they weren't already failing). They do not
run in CI (probably because they were never reliable). Remove them and
associated fixtures.
Checklist
-
make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
commit message follows commit guidelines
Affected core subsystem(s)
test debugger