Inline loose_check fn on call site

compiler/rustc_trait_selection/src/traits/coherence.rs

@@ -287,7 +287,7 @@ fn implicit_negative<'cx, 'tcx>(
             predicate: p,
         })
         .chain(obligations)
-        .find(|o| loose_check(selcx, o));
+        .find(|o| !selcx.predicate_may_hold_fatal(o));
 
     if let Some(failing_obligation) = opt_failing_obligation {
         debug!("overlap: obligation unsatisfiable {:?}", failing_obligation);
@@ -363,16 +363,6 @@ fn negative_impl<'cx, 'tcx>(
     })
 }
 
-fn loose_check<'cx, 'tcx>(
-    selcx: &mut SelectionContext<'cx, 'tcx>,
-    o: &PredicateObligation<'tcx>,
-) -> bool {
-    // FIXME: the call to `selcx.predicate_may_hold_fatal` below should be ported
-    // to the canonical trait query form, `infcx.predicate_may_hold`, once
-    // the new system supports intercrate mode (which coherence needs).
-    !selcx.predicate_may_hold_fatal(o)
-}
-
 fn negative_impl_exists<'cx, 'tcx>(
     selcx: &SelectionContext<'cx, 'tcx>,
     param_env: ty::ParamEnv<'tcx>,