Ignore motion mark svg slight pixel mismatches in mtltestprecompile

Change-Id: Ia5a11580a793226253e2e294f6c43aa76fa97e8f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/441882
Commit-Queue: Brian Salomon <bsalomon@google.com>
Commit-Queue: Jim Van Verth <jvanverth@google.com>
Auto-Submit: Brian Salomon <bsalomon@google.com>
Reviewed-by: Jim Van Verth <jvanverth@google.com>

infra/bots/gen_tasks_logic/dm_flags.go

@@ -442,6 +442,7 @@ func (b *taskBuilder) dmFlags(internalHardwareLabel string) {
 			skip("mtltestprecompile svg _ Seal_of_American_Samoa.svg")
 			skip("mtltestprecompile svg _ Seal_of_Illinois.svg")
 			skip("mtltestprecompile svg _ tiger-8.svg")
+			skip("mtltestprecompile svg _ desk_motionmark_paths.svg")
 		}
 		// Test reduced shader mode on iPhone 11 as representative iOS device
 		if b.model("iPhone11") && b.extraConfig("Metal") {