Remove order from Field Collection set in form
Well, as Rupesh suggested in his comment, i was able to use CSS for hiding the Order column in my form:

First, i specified an ID for the fieldset field in my module's node_form_alter() function:

$form['field_user_details']['#attributes'] = array('id' =&gt; 'user_details');


Then in my CSS, i used these lines to hide the Order column:

#user_details table th:nth-child(2) { display: none; } /* Hide the Order column Label */
#user_details table td.delta-order { display: none; } /* Hide the Order column */