Rust: fix downgrade script (same format_args_arg_names issue)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: tausbn

rust/downgrades/109496fd2f20f28a35e50b110859e74882ee80d6/upgrade.properties

@@ -2,7 +2,6 @@ description: Downgrade from rust-analyzer 0.0.328 to 0.0.301
 compatibility: partial
 
 format_args_arg_arg_names.rel: delete
-format_args_arg_names.rel: delete
 struct_field_default_vals.rel: delete
 variant_const_args.rel: delete
 try_block_modifiers.rel: delete