#4454 Clean up more tests and code

* Remove some tests we no longer need
* Delete blocks of redundant code
* Compress some tests together to simplify them
* Remove a little code for ancient linter versions
* Escape more executables we didn't escape before
* Rename a deno option that didn't match our conventions

test/linter/test_vulture.vader

@@ -56,6 +56,7 @@ Execute(Setting executable to 'pipenv' appends 'run vulture'):
   let g:ale_python_vulture_executable = 'path/to/pipenv'
 
   AssertLinter 'path/to/pipenv', ale#Escape('path/to/pipenv') . ' run vulture' . '  .'
+
 Execute(Setting executable to 'poetry' appends 'run vulture'):
   let g:ale_python_vulture_executable = 'path/to/poetry'