Merge pull request #198 from Irving-cl/fix_duplicate_include

remove duplicate include in trpc.c

src/rpc/src/trpc.c

@@ -20,7 +20,6 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <string.h>
 #include <sys/types.h>
 
 #include "os.h"
@@ -28,7 +27,6 @@
 #include "taosmsg.h"
 #include "tidpool.h"
 #include "tlog.h"
-#include "tlog.h"
 #include "tmd5.h"
 #include "tmempool.h"
 #include "trpc.h"
@@ -38,7 +36,6 @@
 #include "ttcpserver.h"
 #include "ttime.h"
 #include "ttimer.h"
-#include "ttimer.h"
 #include "tudp.h"
 #include "tutil.h"