Only need to declare doc features in one place

src/conversion/from_geo_types.rs

@@ -1,7 +1,3 @@
-// only enables the `doc_cfg` feature when
-// the `docsrs` configuration attribute is defined
-#[cfg_attr(docsrs, feature(doc_cfg))]
-
 use crate::geo_types;
 
 use crate::geometry;

src/conversion/mod.rs

@@ -12,10 +12,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-// only enables the `doc_cfg` feature when
-// the `docsrs` configuration attribute is defined
-#[cfg_attr(docsrs, feature(doc_cfg))]
-
 use crate::geo_types;
 use crate::geo_types::{
     Geometry as GtGeometry, GeometryCollection, LineString as GtLineString,

src/conversion/to_geo_types.rs

@@ -1,7 +1,3 @@
-// only enables the `doc_cfg` feature when
-// the `docsrs` configuration attribute is defined
-#[cfg_attr(docsrs, feature(doc_cfg))]
-
 use crate::geo_types;
 
 use crate::geometry;

src/lib.rs

@@ -264,6 +264,9 @@
 //! implementations which may be useful if you wish to perform this kind of processing yourself and require
 //! more granular control over performance and / or memory allocation.
 
+// only enables the `doc_cfg` feature when
+// the `docsrs` configuration attribute is defined
+#[cfg_attr(docsrs, feature(doc_cfg))]
 #[cfg(feature = "geo-types")]
 use geo_types;
 use serde;