Remove duplicate APIs.json files

Signed-off-by: Juan Cruz Viotti <[email protected]>

Author: jviotti

vendor/apis-json.mask

@@ -8,3 +8,6 @@ spec/apisjson_0.16.txt
 spec/apisjson_0.17.txt
 spec/apisjson_0.18.txt
 spec/apisjson_0.19.txt
+spec/schema_0.14.json
+spec/schema_0.17.json
+spec/schema_0.18.json