file_browser.c - remove #include <string.h>

It is no longer necessary, since string comparison is now carried out by Nuklear API.

demo/common/file_browser.c

@@ -1,3 +1,12 @@
+#ifdef __unix__
+#include <dirent.h>
+#include <unistd.h>
+#endif
+
+#ifndef _WIN32
+# include <pwd.h>
+#endif
+
 struct icons {
     struct nk_image desktop;
     struct nk_image home;
@@ -78,17 +87,6 @@ struct file_browser {
     struct media *media;
 };
 
-#ifdef __unix__
-#include <dirent.h>
-#include <unistd.h>
-#endif
-
-#ifndef _WIN32
-# include <pwd.h>
-#endif
-
-#include <string.h>
-
 static void
 die(const char *fmt, ...)
 {