chore: remove test now that we are on form-data 4.0.4

Author: ahayes91

tests/test-form-data-error.js

@@ -64,19 +64,6 @@ tape('omit content-length header if the value is set to NaN', function (t) {
   })
 })
 
-// TODO: remove this test after [email protected] starts stringifying null values
-tape('form-data should throw on null value', function (t) {
-  t.throws(function () {
-    request({
-      method: 'POST',
-      url: s.url,
-      formData: {
-        key: null
-      }
-    })
-  }, TypeError)
-  t.end()
-})
 
 tape('cleanup', function (t) {
   s.close(function () {