minor: remove merge_imports option

NBSquare · NBSquare · commit 58adf7331986 · 2021-06-04T13:03:28.000-04:00
diff --git a/serde-tests/rustfmt.toml b/serde-tests/rustfmt.toml
@@ -5,5 +5,5 @@ format_strings = true
 normalize_comments = true
 use_try_shorthand = true
 wrap_comments = true
-merge_imports = true
 imports_layout = "HorizontalVertical"
+imports_granularity = "Crate"
