helpers/factory: revert formatter exit code check

Author: mochaaP

lua/null-ls/helpers/formatter_factory.lua

@@ -1,10 +1,9 @@
 return function(opts)
-    local h = require("null-ls.helpers")
-
     -- ignore errors unless otherwise specified
     if opts.ignore_stderr == nil then
         opts.ignore_stderr = true
     end
+
     -- for formatters, to_temp_file only works if from_temp_file is also set
     if opts.to_temp_file then
         opts.from_temp_file = true
@@ -19,10 +18,5 @@ return function(opts)
         return done({ { text = output } })
     end
 
-    if opts.check_exit_code == nil then
-        opts.check_exit_code = 0
-    end
-    opts.check_exit_code = h.check_exit_code(opts.check_exit_code, false, opts.command)
-
-    return h.generator_factory(opts)
+    return require("null-ls.helpers").generator_factory(opts)
 end