Remove unused variable.
diff --git a/regress/malloc.c b/regress/malloc.c
index 2bdd34b..46f9a6c 100644
--- a/regress/malloc.c
+++ b/regress/malloc.c
@@ -47,7 +47,6 @@
 static void *(*real_calloc)(size_t number, size_t size) = NULL;
 static void *(*real_realloc)(void *ptr, size_t size) = NULL;
 
-static FILE *log;
 static const char *myname = NULL;
 
 // TODO: add sentinel -- check if particular size is malloced before doing other stuff