[gcc r15-6250] libstdc++: Remove duplicate using-declaration in <wchar.h>

[Jonathan Wakely]

https://gcc.gnu.org/g:7238b074b59d1e9356456c709df321bc9f6ab8bf

commit r15-6250-g7238b074b59d1e9356456c709df321bc9f6ab8bf
Author: Abdo Eid <abdoeid.eg@ieee.org>
Date:   Sat Dec 14 01:16:10 2024 +0000

    libstdc++: Remove duplicate using-declaration in <wchar.h>
    
    libstdc++-v3/ChangeLog:
    
            * include/c_compatibility/wchar.h (fgetwc): Remove duplicate
            using-declaration.

Diff:
---
 libstdc++-v3/include/c_compatibility/wchar.h | 1 -
 1 file changed, 1 deletion(-)

diff --git a/libstdc++-v3/include/c_compatibility/wchar.h b/libstdc++-v3/include/c_compatibility/wchar.h
index d7420dd17454..a743adf8c55b 100644
--- a/libstdc++-v3/include/c_compatibility/wchar.h
+++ b/libstdc++-v3/include/c_compatibility/wchar.h
@@ -40,7 +40,6 @@ using std::wint_t;
 using std::btowc;
 using std::wctob;
 using std::fgetwc;
-using std::fgetwc;
 using std::fgetws;
 using std::fputwc;
 using std::fputws;