week-view-example.php

<?php

add_filter( 'tribe_events_week_get_hours', 'filter_week_hours' );

function filter_week_hours( $hours ) {
  $hour = 0;
  
  foreach ( $hours as $key => $formatted_hour ) {
    if ( $hour < 7 || $hour > 18 ) {
      unset( $hours[ $hour ] );
    }
    
    $hour ++;
  }
  
  return $hours;
}