Removing if statement around nginx.ng.certificates

Found the problem in that dh_param was set to an int but only a string
or a dictionary would work with the code

nginx/ng/certificates.sls

@@ -30,7 +30,6 @@ generate_nginx_dhparam_{{ dh_param }}_key:
 {%- endif %}
 {%- endfor %}
 
-{% if salt['pillar.get']('nginx:ng:certificates') is defined and salt['pillar.get']('nginx:ng:certificates') %}
 {%- for domain in salt['pillar.get']('nginx:ng:certificates', {}).keys() %}
 
 nginx_{{ domain }}_ssl_certificate:
@@ -52,4 +51,3 @@ nginx_{{ domain }}_ssl_key:
       - service: nginx_service
 {% endif %}
 {%- endfor %}
-{% endif %}