chore(ci): remove unused CI-only happy eyeballs feature

oliviacrain · seanmonstar · commit 3e41a4ead96b · 2022-12-28T16:52:35.000-05:00
diff --git a/Cargo.toml b/Cargo.toml
@@ -90,7 +90,6 @@ ffi = ["libc", "http-body-util"]
 
 # internal features used in CI
 nightly = []
-__internal_happy_eyeballs_tests = []
 
 [package.metadata.docs.rs]
 features = ["ffi", "full"]
