dynamic_debug: remove unused EXPORT_SYMBOLs

The only caller of ddebug_{add,remove}_module outside dynamic_debug.c is
kernel/module.c, which is obviously not itself modular (though it would
be an interesting exercise to make that happen...).  I also fail to see
how these interfaces can be used by modules, in-tree or not.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Rasmus Villemoes <[email protected]>
Acked-by: Jason Baron <[email protected]>
Cc: David Sterba <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Petr Mladek <[email protected]>
Cc: "Rafael J . Wysocki" <[email protected]>
Cc: Steven Rostedt <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

lib/dynamic_debug.c

@@ -868,7 +868,6 @@ int ddebug_add_module(struct _ddebug *tab, unsigned int n,
 	vpr_info("%u debug prints in module %s\n", n, dt->mod_name);
 	return 0;
 }
-EXPORT_SYMBOL_GPL(ddebug_add_module);
 
 /* helper for ddebug_dyndbg_(boot|module)_param_cb */
 static int ddebug_dyndbg_param_cb(char *param, char *val,
@@ -938,7 +937,6 @@ int ddebug_remove_module(const char *mod_name)
 	mutex_unlock(&ddebug_lock);
 	return ret;
 }
-EXPORT_SYMBOL_GPL(ddebug_remove_module);
 
 static void ddebug_remove_all_tables(void)
 {