Remove vendor from extrafiles
Remove vendor from extrafiles

Since we use the autoloader now to load the needed libraries this is not
needed any more.

Fixes issue where psalm is analyzing files in the vendor folder also.

Signed-off-by: Vincent Petry <87e1f221a672a14a323e57bb65eaea19d3ed3804@nextcloud.com>

nextcloud/spreed,nextcloud/spreed,nextcloud/spreed