Remove unreliable yls test for now

Author: w0rp

test/linter/test_yara_yls.vader

@@ -2,18 +2,7 @@ Before:
   call ale#assert#SetUpLinterTest('yara', 'yls')
 
 After:
-  if isdirectory(g:dir . '/.git')
-    call delete(g:dir . '/.git', 'd')
-  endif
-
   call ale#assert#TearDownLinterTest()
 
 Execute(The default executable path should be correct):
   AssertLinter 'yls', ale#Escape('yls') . ' -v'
-
-Execute(The project root should be detected correctly):
-  if !isdirectory(g:dir . '/.git')
-    call mkdir(g:dir . '/.git')
-  endif
-
-  AssertLSPProject g:dir