diff --git a/editions/test/tiddlers/tests/data/let-filter-prefix/UseInput.tid b/editions/test/tiddlers/tests/data/let-filter-prefix/UseInput.tid
deleted file mode 100644
index 4d0aa8eba..000000000
--- a/editions/test/tiddlers/tests/data/let-filter-prefix/UseInput.tid
+++ /dev/null
@@ -1,12 +0,0 @@
-title: LetFilterRunPrefix/UseInput
-description: Using the input of "let" filter run prefix
-type: text/vnd.tiddlywiki-multiple
-tags: [[$:/tags/wiki-test-spec]]
-
-title: Output
-
-<$text text={{{ [[colossus]] :let[[another]] [<another>] +[join[-]] }}}/>
-+
-title: ExpectedResult
-
-<p>colossus</p>
\ No newline at end of file