[glibc] Drop "(C) YYYY" from DCO'd contributions.

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=6b9135f75b941520493f57adca6f63a93c0197d7

commit 6b9135f75b941520493f57adca6f63a93c0197d7
Author: Carlos O'Donell <[email protected]>
Date:   Thu May 7 10:41:36 2026 -0400

    Drop "(C) YYYY" from DCO'd contributions.
    
    Contributions made under DCO use a generic statement to indicate that
    the file has copyright, but that statement does not need to include a
    year. Remove the year to avoid the work required to update that
    statement to include future years as such updates are not required.

Diff:
---
 libio/bug-wgenops-bz33998.c | 2 +-
 misc/getusershell.c         | 2 +-
 misc/tst-getusershell.c     | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/libio/bug-wgenops-bz33998.c b/libio/bug-wgenops-bz33998.c
index cc4067da99..a3e36d2ac1 100644
--- a/libio/bug-wgenops-bz33998.c
+++ b/libio/bug-wgenops-bz33998.c
@@ -1,5 +1,5 @@
 /* Regression test for ungetwc operating on byte stream (BZ #33998)
-   Copyright (C) 2026 The GNU Toolchain Authors.
+   Copyright The GNU Toolchain Authors.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/misc/getusershell.c b/misc/getusershell.c
index e30c566f9d..41ebb556d7 100644
--- a/misc/getusershell.c
+++ b/misc/getusershell.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2026 The GNU Toolchain Authors.
+/* Copyright The GNU Toolchain Authors.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/misc/tst-getusershell.c b/misc/tst-getusershell.c
index e60cabce3a..5877eec864 100644
--- a/misc/tst-getusershell.c
+++ b/misc/tst-getusershell.c
@@ -1,5 +1,5 @@
 /* Test the getusershell series functions.
-   Copyright (C) 2026 The GNU Toolchain Authors.
+   Copyright The GNU Toolchain Authors.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or