[gcc r13-8015] libstdc++: Remove redundant partial specialization in _Nth_type

[gcc r13-8015] libstdc++: Remove redundant partial specialization in _Nth_type

[Jonathan Wakely]

https://gcc.gnu.org/g:c6e03a1c54451eaab872dcdd8ab927b7efe16c9c

commit r13-8015-gc6e03a1c54451eaab872dcdd8ab927b7efe16c9c
Author: Feng Jisen <J1senn@outlook.com>
Date:   Fri Nov 3 16:33:44 2023 +0000

    libstdc++: Remove redundant partial specialization in _Nth_type
    
    libstdc++-v3/ChangeLog:
    
            * include/bits/utility.h (_Nth_type): Remove redundant partial
            specialization.
    
    (cherry picked from commit ada871cfadd3f4960b4435f6f7f07a5aca1887d3)

Diff:
---
 libstdc++-v3/include/bits/utility.h | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/libstdc++-v3/include/bits/utility.h b/libstdc++-v3/include/bits/utility.h
index 714e2c02680..d7385ed72fd 100644
--- a/libstdc++-v3/include/bits/utility.h
+++ b/libstdc++-v3/include/bits/utility.h
@@ -250,10 +250,6 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     { };
 
 #if ! __cpp_concepts // Need additional specializations to avoid ambiguities.
-  template<typename _Tp0, typename _Tp1, typename... _Rest>
-    struct _Nth_type<0, _Tp0, _Tp1, _Rest...>
-    { using type = _Tp0; };
-
   template<typename _Tp0, typename _Tp1, typename _Tp2, typename... _Rest>
     struct _Nth_type<0, _Tp0, _Tp1, _Tp2, _Rest...>
     { using type = _Tp0; };