UPSTREAM: rmi4update: remove redundant include of alloca.h

(cherry picked from commit cf807718a2a6802475be33bff400835d447e5bff)
Signed-off-by: Benson Leung <bleung@google.com>

Bug: 24809436

Change-Id: I3bdd5c1b4aca08c9ed8fa524472bdb52285be125
diff --git a/rmi4update/rmi4update.cpp b/rmi4update/rmi4update.cpp
index 3e129aa..6c267bc 100644
--- a/rmi4update/rmi4update.cpp
+++ b/rmi4update/rmi4update.cpp
@@ -23,7 +23,6 @@
 #include <string.h>
 #include <stdlib.h>
 #include <errno.h>
-#include <alloca.h>
 
 #include "rmi4update.h"