[core] remove unused includes of stat_cache.h

src/mod_fastcgi.c

@@ -13,7 +13,6 @@
 
 #include "plugin.h"
 
-#include "stat_cache.h"
 #include "status_counter.h"
 
 #include <sys/types.h>

src/mod_flv_streaming.c

@@ -5,7 +5,6 @@
 #include "buffer.h"
 #include "response.h"
 #include "http_chunk.h"
-#include "stat_cache.h"
 
 #include "plugin.h"
 

src/mod_staticfile.c

@@ -6,7 +6,6 @@
 
 #include "plugin.h"
 
-#include "stat_cache.h"
 #include "etag.h"
 #include "http_chunk.h"
 #include "response.h"

src/mod_uploadprogress.c

@@ -7,7 +7,6 @@
 #include "plugin.h"
 
 #include "response.h"
-#include "stat_cache.h"
 
 #include <stdlib.h>
 #include <string.h>