Auto merge of #104920 - compiler-errors:avoid-infcx-build, r=jackh726

Avoid some `InferCtxt::build` calls

Either because we're inside of an `InferCtxt` already, or because we're not in a place where we'd ever see inference vars.

r? types

compiler/rustc_hir_analysis/src/astconv/generics.rs

@@ -11,7 +11,6 @@ use rustc_hir as hir;
 use rustc_hir::def::{DefKind, Res};
 use rustc_hir::def_id::DefId;
 use rustc_hir::GenericArg;
-use rustc_infer::infer::TyCtxtInferExt;
 use rustc_middle::ty::{
     self, subst, subst::SubstsRef, GenericParamDef, GenericParamDefKind, IsSuggestable, Ty, TyCtxt,
 };
@@ -83,9 +82,7 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
                 Res::Def(DefKind::TyParam, src_def_id) => {
                     if let Some(param_local_id) = param.def_id.as_local() {
                         let param_name = tcx.hir().ty_param_name(param_local_id);
-                        let infcx = tcx.infer_ctxt().build();
-                        let param_type =
-                            infcx.resolve_numeric_literals_with_default(tcx.type_of(param.def_id));
+                        let param_type = tcx.type_of(param.def_id);
                         if param_type.is_suggestable(tcx, false) {
                             err.span_suggestion(
                                 tcx.def_span(src_def_id),