remove double includes

Origin commit data
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Branch: ni/coolstream
Commit: 6576729fd1
Author: Jacek Jendrzej <overx300@gmail.com>
Date: 2017-09-08 (Fri, 08 Sep 2017)


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No further description and justification available within origin commit message!

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src/system/helpers.h

@@ -23,7 +23,6 @@
 */
 
 #include <stdlib.h>
-#include <string.h>
 #include <unistd.h>
 #include <stdint.h>
 #include <string.h>
@@ -33,9 +32,6 @@
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <map>
- 
-#include <sys/stat.h>
-#include <sys/types.h>
 
 int my_system(const char * cmd);
 int my_system(int argc, const char *arg, ...); /* argc is number of arguments including command */