[gcc r12-5533] libstdc++: Remove dg-error that no longer happens

[gcc r12-5533] libstdc++: Remove dg-error that no longer happens

[Jonathan Wakely]

https://gcc.gnu.org/g:9664c46545601728698a6e3352b32ffcf9a4ade7

commit r12-5533-g9664c46545601728698a6e3352b32ffcf9a4ade7
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Thu Nov 25 22:54:07 2021 +0000

    libstdc++: Remove dg-error that no longer happens
    
    There was a c++11_only dg-error in this testcase, for a "body of
    constexpr function is not a return statement" diagnostic that was bogus,
    but happened because the return statement was ill-formed. A change to
    G++ earlier this month means that diagnostic is no longer emitted, so
    remove the dg-error.
    
    libstdc++-v3/ChangeLog:
    
            * testsuite/20_util/tuple/comparison_operators/overloaded2.cc:
            Remove dg-error for C++11_only error.

Diff:
---
 libstdc++-v3/testsuite/20_util/tuple/comparison_operators/overloaded2.cc | 1 -
 1 file changed, 1 deletion(-)

diff --git a/libstdc++-v3/testsuite/20_util/tuple/comparison_operators/overloaded2.cc b/libstdc++-v3/testsuite/20_util/tuple/comparison_operators/overloaded2.cc
index bac16ffd521..6a7a584c71e 100644
--- a/libstdc++-v3/testsuite/20_util/tuple/comparison_operators/overloaded2.cc
+++ b/libstdc++-v3/testsuite/20_util/tuple/comparison_operators/overloaded2.cc
@@ -52,4 +52,3 @@ auto b = a < a;
 // { dg-error "no match for 'operator<'" "" { target c++20 } 0 }
 // { dg-error "no match for .*_Synth3way|in requirements" "" { target c++20 } 0 }
 // { dg-error "ordered comparison" "" { target c++17_down } 0 }
-// { dg-error "not a return-statement" "" { target c++11_only } 0 }