Remove stdint.h in stream buffer file (#725)

* Remove stdint.h in stream buffer file

Signed-off-by: kar-rahul-aws <karahulx@amazon.com>
diff --git a/stream_buffer.c b/stream_buffer.c
index 80975bd..3a82ba3 100644
--- a/stream_buffer.c
+++ b/stream_buffer.c
@@ -27,7 +27,6 @@
  */
 
 /* Standard includes. */
-#include <stdint.h>
 #include <string.h>
 
 /* Defining MPU_WRAPPERS_INCLUDED_FROM_API_FILE prevents task.h from redefining