Fix container boots on AppArmor protected systems

Link https://github.com/ansible/awx/issues/1297

Signed-off-by: Shane McDonald <me@shanemcd.com>

installer/image_build/files/nginx.conf

@@ -2,7 +2,6 @@
 
 worker_processes  1;
 
-error_log  /dev/stdout warn;
 pid        /tmp/nginx.pid;
 
 events {
@@ -17,8 +16,6 @@ http {
                       '$status $body_bytes_sent "$http_referer" '
                       '"$http_user_agent" "$http_x_forwarded_for"';
 
-    access_log  /dev/stdout  main;
-
     map $http_upgrade $connection_upgrade {
         default upgrade;
         ''      close;