Unused macro and variable removed.
The macro NGX_HTTP_DAV_COPY_BLOCK is not used since 8101d9101ed8 (0.8.9).
The variable ngx_accept_mutex_lock_file was never used.
diff --git a/src/event/ngx_event.c b/src/event/ngx_event.c
index c4c6120..e2857f0 100644
--- a/src/event/ngx_event.c
+++ b/src/event/ngx_event.c
@@ -56,7 +56,6 @@
ngx_uint_t ngx_accept_mutex_held;
ngx_msec_t ngx_accept_mutex_delay;
ngx_int_t ngx_accept_disabled;
-ngx_file_t ngx_accept_mutex_lock_file;
#if (NGX_STAT_STUB)
diff --git a/src/http/modules/ngx_http_dav_module.c b/src/http/modules/ngx_http_dav_module.c
index a97c60e..2a17992 100644
--- a/src/http/modules/ngx_http_dav_module.c
+++ b/src/http/modules/ngx_http_dav_module.c
@@ -10,8 +10,6 @@
#include <ngx_http.h>
-#define NGX_HTTP_DAV_COPY_BLOCK 65536
-
#define NGX_HTTP_DAV_OFF 2