You need to remove the following block in App.js file in mobile app source code:

            <FooterTab style={styles.footerTab}>
                <Button vertical onPress={o.onMessengerMenu} badge={o.bubbles['notifications-messenger'] > 0 ? true : false}>
                    {o.bubbles['notifications-messenger'] > 0 && 
                        (<Badge><Text>{o.bubbles['notifications-messenger']}</Text></Badge>)
                    }
                    <Icon style={styles.footerIcon} name="chatbubbles-outline" type="Ionicons" solid />
                </Button>
            </FooterTab>