fix: wrong poster id for op in api

[perdedora]

This PR fixes wrong poster id in the api. Following the same logic as poster_id.html.
Also removes third argument since it doesnt exists in poster_id function

vichan/templates/post/poster_id.html

Lines 2 to 6 in db20a35

	{% if post.thread %}
	<span class="poster_id">{{ post.ip|poster_id(post.thread) }}</span>
	{% else %}
	<span class="poster_id">{{ post.ip|poster_id(post.id) }}</span>
	{% endif %}

Current:

PR: