attempt to satisfy clippy

crates/duckdb/Cargo.toml

@@ -32,7 +32,10 @@ extensions-full = ["json", "parquet", "vtab-full"]
 buildtime_bindgen = ["libduckdb-sys/buildtime_bindgen"]
 modern-full = ["chrono", "serde_json", "url", "r2d2", "uuid", "polars"]
 polars = ["dep:polars"]
-time = []
+# FIXME: These were added to make clippy happy: these features appear unused and should perhaps be removed
+time = ["time"]
+column_decltype = []
+extra_check = []
 
 [dependencies]
 libduckdb-sys = { workspace = true }
@@ -58,6 +61,11 @@ num = { workspace = true, features = ["std"], optional = true }
 duckdb-loadable-macros = { workspace = true, optional = true }
 polars = { workspace = true, features = ["dtype-full"], optional = true }
 num-integer = { workspace = true }
+time = { version = "0.3.36", features = [
+    "formatting",
+    "macros",
+    "parsing",
+], optional = true }
 
 [dev-dependencies]
 doc-comment = { workspace = true }