[committed] libstdc++: Remove deprecated comparison operators for RB trees

[Jonathan Wakely via Gcc-patches]

These functions were deprecated in GCC 9.1.0 because they are never used
by the library. This patch removes them for GCC 11.

libstdc++-v3/ChangeLog:

        * include/bits/stl_tree.h (operator!=, operator>, operator<=)
        (operator>=): Remove deprecated functions.

Tested powerpc64le-linux. Committed to trunk.


commit 5abc821556e141c9b7003877d09d9dd9e9f98ae7
Author: Jonathan Wakely <jwak...@redhat.com>
Date:   Wed Aug 19 17:04:49 2020

    libstdc++: Remove deprecated comparison operators for RB trees
    
    These functions were deprecated in GCC 9.1.0 because they are never used
    by the library. This patch removes them for GCC 11.
    
    libstdc++-v3/ChangeLog:
    
            * include/bits/stl_tree.h (operator!=, operator>, operator<=)
            (operator>=): Remove deprecated functions.

diff --git a/libstdc++-v3/include/bits/stl_tree.h 
b/libstdc++-v3/include/bits/stl_tree.h
index 21b72cebf2e..c50391d68c3 100644
--- a/libstdc++-v3/include/bits/stl_tree.h
+++ b/libstdc++-v3/include/bits/stl_tree.h
@@ -1632,22 +1632,6 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
        return std::lexicographical_compare(__x.begin(), __x.end(),
                                            __y.begin(), __y.end());
       }
-
-      friend bool _GLIBCXX_DEPRECATED
-      operator!=(const _Rb_tree& __x, const _Rb_tree& __y)
-      { return !(__x == __y); }
-
-      friend bool _GLIBCXX_DEPRECATED
-      operator>(const _Rb_tree& __x, const _Rb_tree& __y)
-      { return __y < __x; }
-
-      friend bool _GLIBCXX_DEPRECATED
-      operator<=(const _Rb_tree& __x, const _Rb_tree& __y)
-      { return !(__y < __x); }
-
-      friend bool _GLIBCXX_DEPRECATED
-      operator>=(const _Rb_tree& __x, const _Rb_tree& __y)
-      { return !(__x < __y); }
 #endif
     };