Remove unused items from examples

Author: kngwyu

src/array.rs

@@ -64,10 +64,9 @@ use crate::slice_box::SliceBox;
 /// # Example
 /// ```
 /// # #[macro_use] extern crate ndarray;
-/// use pyo3::{GILGuard, Python};
 /// use numpy::PyArray;
 /// use ndarray::Array;
-/// Python::with_gil(|py| {
+/// pyo3::Python::with_gil(|py| {
 ///     let pyarray = PyArray::arange(py, 0., 4., 1.).reshape([2, 2]).unwrap();
 ///     let array = array![[3., 4.], [5., 6.]];
 ///     assert_eq!(
@@ -218,10 +217,9 @@ impl<T, D> PyArray<T, D> {
     ///
     /// # Example
     /// ```
-    /// use pyo3::{GILGuard, Python, Py};
     /// use numpy::PyArray1;
-    /// fn return_py_array() -> Py<PyArray1<i32>> {
-    ///    Python::with_gil(|py| PyArray1::zeros(py, [5], false).to_owned())
+    /// fn return_py_array() -> pyo3::Py<PyArray1<i32>> {
+    ///    pyo3::Python::with_gil(|py| PyArray1::zeros(py, [5], false).to_owned())
     /// }
     /// let array = return_py_array();
     /// pyo3::Python::with_gil(|py| {