Fix compilation errors in tests

See rust-ndarray/ndarray#1051. I think these changes will fix the errors, but I haven't tested them.

Author: jturner314

onnxruntime/tests/integration_tests.rs

@@ -104,7 +104,6 @@ mod download {
         let mut probabilities: Vec<(usize, f32)> = outputs[0]
             .softmax(ndarray::Axis(1))
             .into_iter()
-            .copied()
             .enumerate()
             .collect::<Vec<_>>();
         // Sort probabilities so highest is at beginning of vector.
@@ -193,7 +192,6 @@ mod download {
         let mut probabilities: Vec<(usize, f32)> = outputs[0]
             .softmax(ndarray::Axis(1))
             .into_iter()
-            .copied()
             .enumerate()
             .collect::<Vec<_>>();