Remove legacy change stream spec test runner

Author: jmikola

tests/SpecTests/ChangeStreamsSpecTest.php

@@ -70,20 +70,6 @@ private function __construct(array $events)
         }
     }
 
-    public static function fromChangeStreams(array $expectedEvents)
-    {
-        $o = new self($expectedEvents);
-
-        $o->ignoreCommandFailed = true;
-        $o->ignoreCommandSucceeded = true;
-        /* Change Streams spec tests do not include getMore commands in the
-         * list of expected events, so ignore any observed events beyond the
-         * number that are expected. */
-        $o->ignoreExtraEvents = true;
-
-        return $o;
-    }
-
     public static function fromClientSideEncryption(array $expectedEvents)
     {
         $o = new self($expectedEvents);

tests/SpecTests/CommandExpectations.php

@@ -57,27 +57,6 @@ private function __construct()
     {
     }
 
-    public static function fromChangeStreams(stdClass $result)
-    {
-        $o = new self();
-
-        if (isset($result->error->code)) {
-            $o->code = $result->error->code;
-            $o->isExpected = true;
-        }
-
-        if (isset($result->error->errorLabels)) {
-            if (! self::isArrayOfStrings($result->error->errorLabels)) {
-                throw InvalidArgumentException::invalidType('errorLabels', $result->error->errorLabels, 'string[]');
-            }
-
-            $o->includedLabels = $result->error->errorLabels;
-            $o->isExpected = true;
-        }
-
-        return $o;
-    }
-
     public static function fromClientSideEncryption(stdClass $operation)
     {
         return self::fromGenericOperation($operation);