Using dev-dependencies doesn't seem to work w/ compiletest

Author: phansch

clippy_lints/Cargo.toml

@@ -32,8 +32,6 @@ semver = "0.9.0"
 # NOTE: cargo requires serde feat in its url dep
 # see <https://github.com/rust-lang/rust/pull/63587#issuecomment-522343864>
 url = { version =  "2.1.0", features = ["serde"] }
-
-[dev-dependencies]
 quote = "1.0.2"
 syn = { version = "1.0.11", features = ["full"] }