Using a CSS class 'hide-from-entries' you can prevent fields from showing in the entry details page. Add the class to the fields Custom CSS Class area.

gforms-hide-from-entries.php

<?php

/**
 * Gravity Forms // Remove fields from entry details page
 * https://gravityranger.com/
 * 
 * Using a CSS class 'hide-from-entries' you can prevent fields from showing in the entry
 * details page. Add the class to the fields Custom CSS Class area.
 *
 * Step-by-Step Tutorial: https://gravityranger.com/gravity-forms-hide-from-entries/
 *
 * 
 */
 
add_filter('gform_field_content', function ($field_content, $field, $value) {
    // Check if the field is a section field and has the custom class 'hide-from-entries'
    if ($field->type === 'section' && strpos($field->cssClass, 'hide-from-entries') !== false) {
        // Check if we are on the entry details screen
        if ($field->is_entry_detail()) {
            // Remove content from entry details screen
            return '';
        } elseif ($field->is_entry_detail_edit()) {
            // Only on the entry edit screen, output as a hidden field
            $value = esc_attr($value);
            $name  = 'input_' . esc_attr($field->id);
            return "<input type='hidden' name='{$name}' value='{$value}'>";
        }
    }

    // Return the default field content if no conditions are met
    return $field_content;
}, 10, 3);