Remove current_post from localized data

After testing the `gmb_localized_data`, there's no need for this to be included in every map's data. If a developer needs access to the current post ID, they can use `get_the_ID()` within the filter callback.

includes/class-gmb-engine.php

@@ -101,7 +101,6 @@ public function google_maps_shortcode( $atts ) {
 					'search_places' => ! empty( $all_meta['gmb_places_search_multicheckbox'][0] ) ? maybe_unserialize( $all_meta['gmb_places_search_multicheckbox'][0] ) : '',
 				),
 				'map_markers_icon' => ! empty( $all_meta['gmb_map_marker'] ) ? $all_meta['gmb_map_marker'][0] : 'none',
-				'current_post'        => get_the_ID(),
 			)
 		) );