scripts: Allow for skipping version_1_1 features

Treat 1.1 features as 1.0, instead of as an extension.
diff --git a/scripts/unique_objects_generator.py b/scripts/unique_objects_generator.py
index 67905da..4d50994 100644
--- a/scripts/unique_objects_generator.py
+++ b/scripts/unique_objects_generator.py
@@ -261,7 +261,7 @@
         OutputGenerator.beginFeature(self, interface, emit)
         self.headerVersion = None
 
-        if self.featureName != 'VK_VERSION_1_0':
+        if self.featureName != 'VK_VERSION_1_0' and self.featureName != 'VK_VERSION_1_1':
             white_list_entry = []
             if (self.featureExtraProtect != None):
                 white_list_entry += [ '#ifdef %s' % self.featureExtraProtect ]