Wordpress remove_action not working in child theme -

i'm using unite theme in wordpress child theme have created.

when trying remove action php error indicates functions.php file child theme loading before parent /inc/extras.php contains hook want override.

trying correctly rather making quick , dirty change in parent theme.

parent /inc/extras.php loaded include in parent functions.php;

add_action('woocommerce_before_main_content', 'unite_wrapper_start', 10); add_action('woocommerce_after_main_content', 'unite_wrapper_end', 10);  function unite_wrapper_start() {   echo '<div id="primary" class="col-md-8">'; }  function unite_wrapper_end() {   echo '</div>'; } 

when add remove same file works;

add_action('woocommerce_before_main_content', 'unite_wrapper_start', 10); add_action('woocommerce_after_main_content', 'unite_wrapper_end', 10);  function unite_wrapper_start() {   echo '<div id="primary" class="col-md-8">'; }  function unite_wrapper_end() {   echo '</div>'; }  remove_action('woocommerce_before_main_content', 'unite_wrapper_start',10); 

however, when add child functions.php file not;

remove_action('woocommerce_before_main_content', 'unite_wrapper_start',10); 

child functions.php files loading , working...

why be?

add_action('init' , 'remove_functions' , 15 ); function remove_functions() {  remove_action('woocommerce_before_main_content', 'unite_wrapper_start',10); } add_action('woocommerce_before_main_content', 'unite_wrapper_start1', 10); function unite_wrapper_start1(){  echo '<div id="primary" class="col-md-12">'; }