diff --git a/test/sourcemaps/samples/detect-lowres-sourcemaps/_config.js b/test/sourcemaps/samples/detect-lowres-sourcemaps/_config.js
deleted file mode 100644
index b11594dd85..0000000000
--- a/test/sourcemaps/samples/detect-lowres-sourcemaps/_config.js
+++ /dev/null
@@ -1,54 +0,0 @@
-import MagicString from 'magic-string';
-
-// TODO move util fns to test index.js
-
-function result(filename, src, extraOptions = {}) {
-	return {
-		code: src.toString(),
-		map: src.generateDecodedMap({
-			source: filename,
-			hires: true,
-			includeContent: false,
-			...extraOptions
-		})
-	};
-}
-
-function replace_all(src, search, replace) {
-	let idx = src.original.indexOf(search);
-	if (idx == -1) throw new Error('search not found in src');
-	do {
-		src.overwrite(idx, idx + search.length, replace);
-	} while ((idx = src.original.indexOf(search, idx + 1)) != -1);
-}
-
-function replace_first(src, search, replace) {
-	const idx = src.original.indexOf(search);
-	if (idx == -1) throw new Error('search not found in src');
-	src.overwrite(idx, idx + search.length, replace);
-}
-
-export default {
-
-	preprocess_options: {
-		sourcemapLossWarn: 0.9 // warn often
-	},
-
-	js_map_sources: [], // test component has no scripts
-
-	preprocess: [
-		{ markup: ({ content, filename }) => {
-			const src = new MagicString(content);
-			replace_all(src, 'replace_me', 'done_replace');
-			return result(filename, src, { hires: true });
-		} },
-		{ markup: ({ content, filename }) => {
-			const src = new MagicString(content);
-			replace_first(src, 'done_replace', 'version_3');
-			// return low-resolution sourcemap
-			// this should make previous mappings unreachable
-			return result(filename, src, { hires: false });
-		} }
-	]
-
-};
diff --git a/test/sourcemaps/samples/detect-lowres-sourcemaps/input.svelte b/test/sourcemaps/samples/detect-lowres-sourcemaps/input.svelte
deleted file mode 100644
index 2b3afd881b..0000000000
--- a/test/sourcemaps/samples/detect-lowres-sourcemaps/input.svelte
+++ /dev/null
@@ -1,10 +0,0 @@
-replace_me
-replace_me
-replace_me
-replace_me
-replace_me
-replace_me
-replace_me
-replace_me
-replace_me
-replace_me
diff --git a/test/sourcemaps/samples/detect-lowres-sourcemaps/test.js b/test/sourcemaps/samples/detect-lowres-sourcemaps/test.js
deleted file mode 100644
index 0f63efb358..0000000000
--- a/test/sourcemaps/samples/detect-lowres-sourcemaps/test.js
+++ /dev/null
@@ -1,10 +0,0 @@
-export function test({ assert, preprocessed, js }) {
-
-	assert.equal(preprocessed.error, undefined);
-
-  // TODO can we automate this test?
-  // we need the output of console.log
-  // to test the warning message.
-  // or use a different method for warnings?
-
-}