Remove NestedImport tactic

Author: jrobsonchase

src/config/lists.rs

@@ -19,8 +19,6 @@ pub enum DefinitiveListTactic {
     Vertical,
     Horizontal,
     Mixed,
-    /// Tactic for nested import.
-    NestedImport,
     /// Special case tactic for `format!()`, `write!()` style macros.
     SpecialMacro(usize),
 }

src/imports.rs

@@ -706,16 +706,12 @@ fn rewrite_nested_use_tree(
         shape.width.saturating_sub(2)
     };
 
-    let tactic = if has_nested_list {
-        DefinitiveListTactic::NestedImport
-    } else {
-        definitive_tactic(
-            &list_items,
-            context.config.imports_layout(),
-            Separator::Comma,
-            remaining_width,
-        )
-    };
+    let tactic = definitive_tactic(
+        &list_items,
+        context.config.imports_layout(),
+        Separator::Comma,
+        remaining_width,
+    );
 
     let ends_with_newline = context.config.imports_indent() == IndentStyle::Block
         && tactic != DefinitiveListTactic::Horizontal;

src/lists.rs

@@ -282,14 +282,13 @@ where
                 result.push('\n');
                 result.push_str(indent_str);
             }
-            DefinitiveListTactic::Mixed | DefinitiveListTactic::NestedImport => {
+            DefinitiveListTactic::Mixed => {
                 let total_width = total_item_width(item) + item_sep_len;
 
                 // 1 is space between separator and item.
                 if (line_len > 0 && line_len + 1 + total_width > formatting.shape.width)
                     || prev_item_had_post_comment
-                    || (tactic == DefinitiveListTactic::NestedImport
-                        && (prev_item_is_nested_import || (!first && inner_item.contains("::"))))
+                    || (prev_item_is_nested_import || (!first && inner_item.contains("::")))
                 {
                     result.push('\n');
                     result.push_str(indent_str);