[sdk] fuchsia_dart.api change

This is related to http://fxr/273250.

DX-1367 #comment

Change-Id: I63540519660e436f42d5b07214c342f0a125c4b1
diff --git a/public/sdk/fuchsia_dart.api b/public/sdk/fuchsia_dart.api
index f5145a8..aa360c4 100644
--- a/public/sdk/fuchsia_dart.api
+++ b/public/sdk/fuchsia_dart.api
@@ -14,7 +14,6 @@
 sdk://fidl/fuchsia.io
 sdk://fidl/fuchsia.ledger
 sdk://fidl/fuchsia.logger
-sdk://fidl/fuchsia.math
 sdk://fidl/fuchsia.media
 sdk://fidl/fuchsia.media.audio
 sdk://fidl/fuchsia.mem