[PATCH] Cleanup gdb printers.py

[François Dumont via Gcc-patches]

I stopped my research to find out if those types ever existed in 2001. 
Clearly they do not exist now.

    libstdc++: Remove useless gdb printer registrations.
    libstdc++-v3/ChangeLog:

            * python/libstdcxx/v6/printers.py: Remove printer 
registration for non-existing
            types std::__debug::unique_ptr, std::__debug::stack, 
std::__debug::queue,
            std::__debug::priority_queue.

Ok to commit ?

François
diff --git a/libstdc++-v3/python/libstdcxx/v6/printers.py b/libstdc++-v3/python/libstdcxx/v6/printers.py
index bd4289c1c62..5a3dcbd13f9 100644
--- a/libstdc++-v3/python/libstdcxx/v6/printers.py
+++ b/libstdc++-v3/python/libstdcxx/v6/printers.py
@@ -2246,12 +2246,7 @@ def build_libstdcxx_dictionary ():
     libstdcxx_printer.add('std::__debug::map', StdMapPrinter)
     libstdcxx_printer.add('std::__debug::multimap', StdMapPrinter)
     libstdcxx_printer.add('std::__debug::multiset', StdSetPrinter)
-    libstdcxx_printer.add('std::__debug::priority_queue',
-                          StdStackOrQueuePrinter)
-    libstdcxx_printer.add('std::__debug::queue', StdStackOrQueuePrinter)
     libstdcxx_printer.add('std::__debug::set', StdSetPrinter)
-    libstdcxx_printer.add('std::__debug::stack', StdStackOrQueuePrinter)
-    libstdcxx_printer.add('std::__debug::unique_ptr', UniquePointerPrinter)
     libstdcxx_printer.add('std::__debug::vector', StdVectorPrinter)
 
     # These are the TR1 and C++11 printers.