Remove a hack that isn't needed anymore

compiler/rustc_hir_analysis/src/check/wfcheck.rs

@@ -119,16 +119,7 @@ where
 
  let errors = wfcx.select_all_or_error();
  if !errors.is_empty() {
- let err = infcx.err_ctxt().report_fulfillment_errors(errors);
- if tcx.dcx().has_errors().is_some() {
- return Err(err);
- } else {
- // HACK(oli-obk): tests/ui/specialization/min_specialization/specialize_on_type_error.rs
- // causes an delayed bug during normalization, without reporting an error, so we need
- // to act as if no error happened, in order to let our callers continue and report an
- // error later in check_impl_items_against_trait.
- return Ok(());
- }
+ return Err(infcx.err_ctxt().report_fulfillment_errors(errors));
  }
 
  debug!(?assumed_wf_types);