Reformat imports to a consistent style for imports

rustfmt.toml configuration:
  imports_granularity = "One"
  group_imports = "One"

sdk/program/src/feature.rs

@@ -62,8 +62,7 @@ pub fn activate_with_lamports(
 
 #[cfg(test)]
 mod test {
-    use super::*;
-    use solana_program::clock::Slot;
+    use {super::*, solana_program::clock::Slot};
 
     #[test]
     fn feature_sizeof() {