Bug 1560331 - Disable test cause of the frequent failures. a=testonly

testing/web-platform/meta/css/css-grid/grid-model/grid-container-scrollbar-001.html.ini

@@ -1,4 +1,3 @@
 [grid-container-scrollbar-001.html]
-  expected:
-    if (os == "android") and not debug and not e10s: FAIL
-    if (os == "android") and debug: PASS
+  disabled:
+    if (os == "android"): https://bugzilla.mozilla.org/show_bug.cgi?id=1560331