remove text/css from default charset_types
as it does not usually require recoding

src/http/modules/ngx_http_charset_filter_module.c

diff --git a/src/http/modules/ngx_http_charset_filter_module.c b/src/http/modules/ngx_http_charset_filter_module.c
index 8938055..16b6168 100644
--- a/src/http/modules/ngx_http_charset_filter_module.c
+++ b/src/http/modules/ngx_http_charset_filter_module.c
@@ -115,7 +115,6 @@
 
 ngx_str_t  ngx_http_charset_default_types[] = {
     ngx_string("text/html"),
-    ngx_string("text/css"),
     ngx_string("text/xml"),
     ngx_string("text/plain"),
     ngx_string("text/vnd.wap.wml"),