Remove empty string from list (Spark Dataframe) : <p>Current Dataframe</p>

<pre><code>+-----------------+--------------------+
|__index_level_0__|        Text_obj_col|
+-----------------+--------------------+
|                1|   [ ,entrepreneurs]|
|                2|[eat, , human, poop]|
|                3|    [Manafort, case]|
|                4|  [Sunar, Khatris, ]|
|                5|[become, arrogant, ]|
|                6|  [GPS, get, name, ]|
|                7|[exactly, reality, ]|
+-----------------+--------------------+
</code></pre>

<p>I want that empty string from the list removed.
This is test data actual data is pretty big, how can I do this in pyspark?</p>
