Move metadata to the right directory.

MANUAL PUSH: Trivial fix

bugzilla-url: https://bugzilla.mozilla.org/show_bug.cgi?id=1876919
gecko-commit: 1b609eb33a5f63ae4fb1750a10a80be8aa46e2a7
diff --git a/css/css-viewport/__dir__.ini b/css/css-viewport/__dir__.ini
deleted file mode 100644
index 5c5a126..0000000
--- a/css/css-viewport/__dir__.ini
+++ /dev/null
@@ -1 +0,0 @@
-prefs: [layout.css.zoom.enabled:true]