qapi: Simplify builtin type handling

There was some redundancy between builtin_types[] and
builtin_type_qtypes{}.  Merge them into one.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
diff --git a/scripts/qapi.py b/scripts/qapi.py
index 77d46aa..2b5775d 100644
--- a/scripts/qapi.py
+++ b/scripts/qapi.py
@@ -16,13 +16,7 @@
 import os
 import sys
 
-builtin_types = [
-    'str', 'int', 'number', 'bool',
-    'int8', 'int16', 'int32', 'int64',
-    'uint8', 'uint16', 'uint32', 'uint64'
-]
-
-builtin_type_qtypes = {
+builtin_types = {
     'str':      'QTYPE_QSTRING',
     'int':      'QTYPE_QINT',
     'number':   'QTYPE_QFLOAT',