Remove wrong note about modifying expected documents in tests

tests/SpecTests/ChangeStreamsSpecTest.php

@@ -27,8 +27,6 @@ class ChangeStreamsSpecTest extends FunctionalTestCase
     /**
      * Assert that the expected and actual command documents match.
      *
-     * Note: this method may modify the $expected object.
-     *
      * @param stdClass $expected Expected command document
      * @param stdClass $actual   Actual command document
      */

tests/SpecTests/CrudSpecTest.php

@@ -17,8 +17,6 @@ class CrudSpecTest extends FunctionalTestCase
     /**
      * Assert that the expected and actual command documents match.
      *
-     * Note: this method may modify the $expected object.
-     *
      * @param stdClass $expected Expected command document
      * @param stdClass $actual   Actual command document
      */

tests/SpecTests/RetryableReadsSpecTest.php

@@ -28,8 +28,6 @@ class RetryableReadsSpecTest extends FunctionalTestCase
     /**
      * Assert that the expected and actual command documents match.
      *
-     * Note: this method may modify the $expected object.
-     *
      * @param stdClass $expected Expected command document
      * @param stdClass $actual   Actual command document
      */