[librsvg] Ignore filters-example-01-b.svg

[Federico Mena Quintero <federico src gnome org>]

commit 93c0fb64d6cdab0e1ed3f67f5c90f74ef226bfb4
Author: Federico Mena Quintero <federico gnome org>
Date:   Tue Jul 10 16:13:41 2018 +0200

    Ignore filters-example-01-b.svg
    
    This is failing on i386 as well, because of text rendering differences.

 .../svg1.1/{filters-example-01-b.svg => ignore-filters-example-01-b.svg}  | 0
 1 file changed, 0 insertions(+), 0 deletions(-)
---
diff --git a/tests/fixtures/reftests/svg1.1/filters-example-01-b.svg 
b/tests/fixtures/reftests/svg1.1/ignore-filters-example-01-b.svg
similarity index 100%
rename from tests/fixtures/reftests/svg1.1/filters-example-01-b.svg
rename to tests/fixtures/reftests/svg1.1/ignore-filters-example-01-b.svg