Remove excess <stdint.h>

src/nvim/msgpack_rpc/helpers.c

@@ -1,7 +1,6 @@
 // This is an open source non-commercial project. Dear PVS-Studio, please check
 // it. PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
 
-#include <stdint.h>
 #include <stdbool.h>
 #include <inttypes.h>
 

src/nvim/msgpack_rpc/server.c

@@ -4,7 +4,6 @@
 #include <assert.h>
 #include <stdlib.h>
 #include <string.h>
-#include <stdint.h>
 #include <inttypes.h>
 
 #include "nvim/msgpack_rpc/channel.h"