dont call mir.post_mono_checks in codegen

compiler/rustc_codegen_ssa/src/mir/mod.rs

@@ -211,17 +211,6 @@ pub fn codegen_mir<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>>(
 
  fx.per_local_var_debug_info = fx.compute_per_local_var_debug_info(&mut start_bx);
 
- // Rust post-monomorphization checks; we later rely on them.
- if let Err(err) =
- mir.post_mono_checks(cx.tcx(), ty::ParamEnv::reveal_all(), |c| Ok(fx.monomorphize(c)))
- {
- err.emit_err(cx.tcx());
- // This IR shouldn't ever be emitted, but let's try to guard against any of this code
- // ever running.
- start_bx.abort();
- return;
- }
-
  let memory_locals = analyze::non_ssa_locals(&fx);
 
  // Allocate variable and temp allocas