[bugfix] correctly format editorconfig (#78)

I had incorrectly assumed you could split the array over multiple lines. Also removed non-existant (for now) files.

Reviewed-on: https://codeberg.org/superseriousbusiness/masto-fe-standalone/pulls/78
Co-authored-by: Zoë Bijl <code@moiety.me>
Co-committed-by: Zoë Bijl <code@moiety.me>

.editorconfig

@@ -1,9 +1,7 @@
+root = true
+
 [*.scss]
 indent_size = 2
 
-[{
+[login.scss]
-    tangerine.scss,
-    login.scss,
-    **/tangerine/*.scss
-}]
 indent_size = 4