feat: remove curly braces with fmt

noir_stdlib/src/array.nr

@@ -1,4 +1,4 @@
-use crate::cmp::{Ord};
+use crate::cmp::Ord;
 
 // TODO: Once we fully move to the new SSA pass this module can be removed and replaced
 // by the methods in the `slice` module

tooling/nargo_fmt/src/rewrite/imports.rs

@@ -102,7 +102,11 @@ impl UseTree {
 
         let mut iter = self.path.iter().peekable();
         while let Some(segment) = iter.next() {
-            let segment_str = segment.rewrite(visitor, shape);
+            let mut segment_str = segment.rewrite(visitor, shape);
+            if segment_str.contains('{') && !segment_str.contains(',') {
+                let empty = "";
+                segment_str = segment_str.replace(['{', '}'], empty);
+            }
             result.push_str(&segment_str);
 
             if iter.peek().is_some() {

tooling/nargo_fmt/tests/expected/import_braces.nr

@@ -0,0 +1 @@
+use dep::std::hash::sha256;

tooling/nargo_fmt/tests/input/import_braces.nr

@@ -0,0 +1 @@
+use dep::std::hash::{sha256};