[gcc r14-3657] libstdc++: Remove unnecessary dg-options and outdated comment

[Jonathan Wakely]

https://gcc.gnu.org/g:270e702edae3e508ee91ff041d97400803eef009

commit r14-3657-g270e702edae3e508ee91ff041d97400803eef009
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Mon Sep 4 15:13:35 2023 +0100

    libstdc++: Remove unnecessary dg-options and outdated comment
    
    It's no longer true that 1.0if has type float _Complex when GNU
    extensions are enabled, so remove the hardcoded -std option.
    
    libstdc++-v3/ChangeLog:
    
            * testsuite/26_numerics/complex/literals/types.cc: Remove
            dg-options and add target selector instead.

Diff:
---
 libstdc++-v3/testsuite/26_numerics/complex/literals/types.cc | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/libstdc++-v3/testsuite/26_numerics/complex/literals/types.cc b/libstdc++-v3/testsuite/26_numerics/complex/literals/types.cc
index 5cc46d741ef7..69c6781d7399 100644
--- a/libstdc++-v3/testsuite/26_numerics/complex/literals/types.cc
+++ b/libstdc++-v3/testsuite/26_numerics/complex/literals/types.cc
@@ -1,7 +1,4 @@
-// Use -std=c++14 explicitly, because -std=gnu++14 enables GNU extension for
-// complex literals, so 1.0if is __complex__ float not std::complex<float>.
-// { dg-options "-std=c++14" }
-// { dg-do compile }
+// { dg-do compile { target c++14 } }
 
 // Copyright (C) 2013-2023 Free Software Foundation, Inc.
 //