Issue #3446962 by kim.pepper: Remove incorrectly added...

Issue #3446962 by kim.pepper: Remove incorrectly added InputStreamUploadedFile::supportsMoveUploadedFile()

(cherry picked from commit de44e097)

core/modules/file/src/Upload/InputStreamUploadedFile.php

@@ -49,13 +49,6 @@ public function getFilename(): string {
     return $this->filename;
   }
 
-  /**
-   * {@inheritdoc}
-   */
-  public function supportsMoveUploadedFile(): bool {
-    return FALSE;
-  }
-
   /**
    * {@inheritdoc}
    */