style: fecs related doc and vim scripts

ale_linters/html/fecs.vim

@@ -1,9 +1,6 @@
 " Author: harttle <yangjvn@126.com>
 " Description: fecs for HTMl files
 
-call ale#Set('html_fecs_executable', 'fecs')
-call ale#Set('html_fecs_use_global', get(g:, 'ale_use_global_executables', 0))
-
 call ale#linter#Define('html', {
 \   'name': 'fecs',
 \   'executable': function('ale#handlers#fecs#GetExecutable'),