Remove two unnecessary references

Author: bjorn3

compiler/rustc_driver_impl/src/lib.rs

@@ -394,7 +394,7 @@ fn run_compiler(
         // If pretty printing is requested: Figure out the representation, print it and exit
         if let Some(pp_mode) = sess.opts.pretty {
             if pp_mode.needs_ast_map() {
-                create_and_enter_global_ctxt(&compiler, krate, |tcx| {
+                create_and_enter_global_ctxt(compiler, krate, |tcx| {
                     tcx.ensure().early_lint_checks(());
                     pretty::print(sess, pp_mode, pretty::PrintExtra::NeedsAstMap { tcx });
                     passes::write_dep_info(tcx);
@@ -414,7 +414,7 @@ fn run_compiler(
             return early_exit();
         }
 
-        let linker = create_and_enter_global_ctxt(&compiler, krate, |tcx| {
+        let linker = create_and_enter_global_ctxt(compiler, krate, |tcx| {
             let early_exit = || {
                 sess.dcx().abort_if_errors();
                 None