Omit __init__ entry in usmmemory template

Author: oleksandr-pavlyk

docs/doc_sources/_templates/autosummary/usmmemory.rst

@@ -13,7 +13,7 @@
 
    .. autosummary::
       :toctree: generated
-   {% for item in methods %}
+   {% for item in methods if item != "__init__" %}
       ~{{ name }}.{{ item }}
    {%- endfor %}
    {% endif %}