Move core/scripts to build/scripts so that platform can use them.

Source/core/scripts/templates/InternalRuntimeFlags.idl.tmpl

Index: Source/core/scripts/templates/InternalRuntimeFlags.idl.tmpl
diff --git a/Source/core/scripts/templates/InternalRuntimeFlags.idl.tmpl b/Source/core/scripts/templates/InternalRuntimeFlags.idl.tmpl
deleted file mode 100644
index 92838f258a510354fc1cd48951f2326a4bd4ba57..0000000000000000000000000000000000000000
--- a/Source/core/scripts/templates/InternalRuntimeFlags.idl.tmpl
+++ /dev/null
@@ -1,14 +0,0 @@
-{% from "macros.tmpl" import license -%}
-{{ license() }}
-
-[
-] interface InternalRuntimeFlags {
-{%- for feature in features if not feature.custom %}
-{#-
-    Currently assuming that runtime flags cannot be changed after startup
-    it's possible that some can be and should be conditionally readonly.
-#}
-    {% if feature.condition -%} [Conditional={{feature.condition}}] {% endif -%}
-    readonly attribute boolean {{feature.first_lowered_name}}Enabled;
-{%- endfor %}
-};