#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_cspell.vader

@@ -68,4 +68,3 @@ Execute(Additional cspell options should be configurable):
   \  'cspell',
   \  ale#Escape('cspell')
   \  . ' lint --no-color --no-progress --no-summary --foobar -- stdin'
-