Revert "Adopt new Cargo feature resolver"

dtolnay · dtolnay · commit d89c19f903cd · 2023-08-25T19:15:26.000-07:00
This reverts commit e1c2724. Closes #2603.
diff --git a/Cargo.toml b/Cargo.toml
@@ -5,7 +5,6 @@ members = [
     "serde_derive_internals",
     "test_suite",
 ]
-resolver = "2"
 
 [patch.crates-io]
 serde = { path = "serde" }
