FYI: remove unused declaration

[Tom Tromey]

I'm checking this in.

This declaration somehow snuck in.  It is for a function that was on the
old Python branch, but which we don't plan to incorporate into gdb.

Tom

2010-08-13  Tom Tromey  <tromey@redhat.com>

	* python/python-internal.h (gdbpy_get_hook_function): Don't
	declare.

Index: python/python-internal.h
===================================================================
RCS file: /cvs/src/src/gdb/python/python-internal.h,v
retrieving revision 1.31
diff -u -r1.31 python-internal.h
--- python/python-internal.h	6 Jul 2010 19:03:12 -0000	1.31
+++ python/python-internal.h	13 Aug 2010 20:46:08 -0000
@@ -112,7 +112,6 @@
 PyObject *gdbpy_inferiors (PyObject *unused, PyObject *unused2);
 PyObject *gdbpy_selected_thread (PyObject *self, PyObject *args);
 PyObject *gdbpy_string_to_argv (PyObject *self, PyObject *args);
-PyObject *gdbpy_get_hook_function (const char *);
 PyObject *gdbpy_parameter (PyObject *self, PyObject *args);
 PyObject *gdbpy_parameter_value (enum var_types type, void *var);
 char *gdbpy_parse_command_name (char *text,