Remove .tmpl extension from Jinja templates in core

Source/core/scripts/make_runtime_features.py

Index: Source/core/scripts/make_runtime_features.py
diff --git a/Source/core/scripts/make_runtime_features.py b/Source/core/scripts/make_runtime_features.py
index 1454f09f1b98a97bd424c63bb8b9490462c8b41e..635c7e67ff158b23263fa150f6e4a73b5783d9c5 100755
--- a/Source/core/scripts/make_runtime_features.py
+++ b/Source/core/scripts/make_runtime_features.py
@@ -80,14 +80,14 @@ class RuntimeFeatureWriter(in_generator.Writer):
         # which is how we're referring to them in this generator.
         return self.valid_values['status']
 
-    @template_expander.use_jinja(class_name + ".h.tmpl")
+    @template_expander.use_jinja(class_name + ".h")
     def generate_header(self):
         return {
             'features': self._features,
             'feature_sets': self._feature_sets(),
         }
 
-    @template_expander.use_jinja(class_name + ".cpp.tmpl")
+    @template_expander.use_jinja(class_name + ".cpp")
     def generate_implementation(self):
         return {
             'features': self._features,