Revert readConcern in createCommandDocument

Author: GromNaN

src/Operation/Count.php

@@ -202,7 +202,7 @@ private function createCommandDocument(): array
             $cmd['hint'] = is_array($this->options['hint']) ? (object) $this->options['hint'] : $this->options['hint'];
         }
 
-        foreach (['comment', 'limit', 'maxTimeMS', 'skip', 'readConcern'] as $option) {
+        foreach (['comment', 'limit', 'maxTimeMS', 'skip'] as $option) {
             if (isset($this->options[$option])) {
                 $cmd[$option] = $this->options[$option];
             }

src/Operation/FindAndModify.php

@@ -305,7 +305,7 @@ private function createCommandDocument(): array
                 : (object) $this->options['update'];
         }
 
-        foreach (['arrayFilters', 'bypassDocumentValidation', 'comment', 'hint', 'maxTimeMS', 'readConcern'] as $option) {
+        foreach (['arrayFilters', 'bypassDocumentValidation', 'comment', 'hint', 'maxTimeMS'] as $option) {
             if (isset($this->options[$option])) {
                 $cmd[$option] = $this->options[$option];
             }