diff --git a/packages/@ember/-internals/runtime/lib/mixins/array.js b/packages/@ember/-internals/runtime/lib/mixins/array.js
index 81e1d87b908..ab2368f3332 100644
--- a/packages/@ember/-internals/runtime/lib/mixins/array.js
+++ b/packages/@ember/-internals/runtime/lib/mixins/array.js
@@ -26,7 +26,6 @@ import Enumerable from './enumerable';
 import compare from '../compare';
 import { ENV } from '@ember/-internals/environment';
 import Observable from '../mixins/observable';
-import copy from '../copy';
 import MutableEnumerable from './mutable_enumerable';
 import { typeOf } from '../type-of';
 
@@ -1583,19 +1582,6 @@ let NativeArray = Mixin.create(MutableArray, Observable, {
 
     return this;
   },
-
-  copy(deep) {
-    deprecate(`Using \`NativeArray#copy\` is deprecated`, false, {
-      id: 'ember-runtime.using-array-copy',
-      until: '3.5.0',
-    });
-
-    if (deep) {
-      return this.map(item => copy(item, true));
-    }
-
-    return this.slice();
-  },
 });
 
 // Remove any methods implemented natively so we don't override them
diff --git a/packages/@ember/-internals/runtime/tests/system/native_array/copyable_suite_test.js b/packages/@ember/-internals/runtime/tests/system/native_array/copyable_suite_test.js
deleted file mode 100644
index bb0c1daecd7..00000000000
--- a/packages/@ember/-internals/runtime/tests/system/native_array/copyable_suite_test.js
+++ /dev/null
@@ -1,19 +0,0 @@
-import { A as emberA } from '../../../lib/mixins/array';
-import { moduleFor, AbstractTestCase } from 'internal-test-helpers';
-
-moduleFor(
-  'NativeArray Copyable',
-  class extends AbstractTestCase {
-    ['@test deep copy is respected'](assert) {
-      let array = emberA([{ id: 1 }, { id: 2 }, { id: 3 }]);
-      let copiedArray;
-
-      expectDeprecation(() => {
-        copiedArray = array.copy(true);
-      }, `Using \`NativeArray#copy\` is deprecated`);
-
-      assert.deepEqual(copiedArray, array, 'copied array is equivalent');
-      assert.ok(copiedArray[0] !== array[0], 'objects inside should be unique');
-    }
-  }
-);