Remove legacy test

plugs/index/snippet.test.ts

@@ -1,17 +0,0 @@
-import { assertEquals } from "$lib/test_deps.ts";
-import { extractSnippet } from "./page_links.ts";
-
-Deno.test("Snippet extraction", () => {
-  const sample1 = `This is a test
-and a [[new]] line that runs super duper duper duper duper duper long
-[[SETTINGS]]
-    super`;
-  assertEquals(
-    extractSnippet(sample1, sample1.indexOf("[[new]]")),
-    "and a [[new]] line that runs sup",
-  );
-  assertEquals(
-    extractSnippet(sample1, sample1.indexOf("[[SETTINGS]]")),
-    "[[SETTINGS]]",
-  );
-});