Remove useless quotes around ssl_ciphers value

Not sure if it breaks with them or not, but no other directive
uses quotes and the nginx docs show examples without quotes,
so we're being consistent with all of that.

roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-client-element.conf.j2

@@ -70,7 +70,7 @@ server {
 
 	ssl_protocols {{ matrix_nginx_proxy_ssl_protocols }};
 	{% if matrix_nginx_proxy_ssl_ciphers != "" %}
-	ssl_ciphers "{{ matrix_nginx_proxy_ssl_ciphers }}";
+	ssl_ciphers {{ matrix_nginx_proxy_ssl_ciphers }};
 	{% endif %}
 	ssl_prefer_server_ciphers {{ matrix_nginx_proxy_ssl_prefer_server_ciphers }};
 

roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-dimension.conf.j2

@@ -68,7 +68,7 @@ server {
 
 	ssl_protocols {{ matrix_nginx_proxy_ssl_protocols }};
 	{% if matrix_nginx_proxy_ssl_ciphers != '' %}
-	ssl_ciphers "{{ matrix_nginx_proxy_ssl_ciphers }}";
+	ssl_ciphers {{ matrix_nginx_proxy_ssl_ciphers }};
 	{% endif %}
 	ssl_prefer_server_ciphers {{ matrix_nginx_proxy_ssl_prefer_server_ciphers }};
 

roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-domain.conf.j2

@@ -61,7 +61,7 @@ server {
 
 	ssl_protocols {{ matrix_nginx_proxy_ssl_protocols }};
 	{% if matrix_nginx_proxy_ssl_ciphers != '' %}
-	ssl_ciphers "{{ matrix_nginx_proxy_ssl_ciphers }}";
+	ssl_ciphers {{ matrix_nginx_proxy_ssl_ciphers }};
 	{% endif %}
 	ssl_prefer_server_ciphers {{ matrix_nginx_proxy_ssl_prefer_server_ciphers }};
 

roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-jitsi.conf.j2

@@ -89,7 +89,7 @@ server {
 
 	ssl_protocols {{ matrix_nginx_proxy_ssl_protocols }};
 	{% if matrix_nginx_proxy_ssl_ciphers != '' %}
-	ssl_ciphers "{{ matrix_nginx_proxy_ssl_ciphers }}";
+	ssl_ciphers {{ matrix_nginx_proxy_ssl_ciphers }};
 	{% endif %}
 	ssl_prefer_server_ciphers {{ matrix_nginx_proxy_ssl_prefer_server_ciphers }};
 

roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-riot-web.conf.j2

@@ -54,7 +54,7 @@ server {
 
 	ssl_protocols {{ matrix_nginx_proxy_ssl_protocols }};
 	{% if matrix_nginx_proxy_ssl_ciphers != '' %}
-	ssl_ciphers "{{ matrix_nginx_proxy_ssl_ciphers }}";
+	ssl_ciphers {{ matrix_nginx_proxy_ssl_ciphers }};
 	{% endif %}
 	ssl_prefer_server_ciphers {{ matrix_nginx_proxy_ssl_prefer_server_ciphers }};
 

roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-synapse.conf.j2

@@ -206,7 +206,7 @@ server {
 
 	ssl_protocols {{ matrix_nginx_proxy_ssl_protocols }};
 	{% if matrix_nginx_proxy_ssl_ciphers != '' %}
-	ssl_ciphers "{{ matrix_nginx_proxy_ssl_ciphers }}";
+	ssl_ciphers {{ matrix_nginx_proxy_ssl_ciphers }};
 	{% endif %}
 	ssl_prefer_server_ciphers {{ matrix_nginx_proxy_ssl_prefer_server_ciphers }};
 
@@ -241,7 +241,7 @@ server {
 
 	ssl_protocols {{ matrix_nginx_proxy_ssl_protocols }};
 	{% if matrix_nginx_proxy_ssl_ciphers != '' %}
-	ssl_ciphers "{{ matrix_nginx_proxy_ssl_ciphers }}";
+	ssl_ciphers {{ matrix_nginx_proxy_ssl_ciphers }};
 	{% endif %}
 	ssl_prefer_server_ciphers {{ matrix_nginx_proxy_ssl_prefer_server_ciphers }};