Exclude tools/gpu/atlastext from public.bzl

Change-Id: I6506519860d48417d525c48e1e60a4eb6e5070d9
Reviewed-on: https://skia-review.googlesource.com/73560
Reviewed-by: Brian Salomon <bsalomon@google.com>
diff --git a/public.bzl b/public.bzl
index dfc163b..7d2ee5d 100644
--- a/public.bzl
+++ b/public.bzl
@@ -473,6 +473,7 @@
         "tests/skia_test.cpp",  # Old main.
         "tests/SkpSkGrTest.cpp",  # Alternate main.
         "tests/SVGDeviceTest.cpp",
+        "tools/gpu/atlastext/*",
         "tools/gpu/gl/angle/*",
         "tools/gpu/gl/egl/*",
         "tools/gpu/gl/glx/*",