Disable XFA tests without embedded fonts

These are being flakey due to subtle differences between builders, so
turning them off while resolving that.

Change-Id: I7f400a7a95076bafb2739ff78786eb3cc147953c
Reviewed-on: https://pdfium-review.googlesource.com/27830
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>
diff --git a/testing/SUPPRESSIONS b/testing/SUPPRESSIONS
index 2572203..7633e04 100644
--- a/testing/SUPPRESSIONS
+++ b/testing/SUPPRESSIONS
@@ -330,4 +330,6 @@
 dynamic_password_field_background_fill.pdf * * *
 resolve_nodes.pdf * * *
 standard_symbols.pdf * * *
+xfa_example.in * * *
 xfa_node_caption.pdf * * *
+xfa_textfield.in * * *