Force Port 80 or Port 443 via .htaccess. This will also remove www. from the url.

.htaccess

# FORCE PORT 80 (insecure / regular traffic)
RewriteEngine On
RewriteCond %{HTTPS} on
RewriteRule ^ http://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]

###########################################################

#FORCE PORT 443 && REMOVE WWW. (secure / SSL)
RewriteCond %{SERVER_PORT} 80 
RewriteRule ^(.*)$ https://%{HTTP_HOST}/$1 [R,L]

RewriteCond %{HTTP_HOST} ^www\.(.*)$ [NC]
RewriteRule ^(.*)$ https://%1/$1 [R=301,L]