Remove "python/tidy_self_test/speclink.rs"

- it already move to "python/tidy/servo_tidy_tests/speclink.rs"

python/tidy_self_test/speclink.rs

@@ -1,9 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-impl SpecLinkMethods for SpecLink {
-    fn Test(&self) -> f32 {
-        0
-    }
-}