Fix warning.
diff --git a/driver-avalon.c b/driver-avalon.c
index 72a8d4b..d09da5b 100644
--- a/driver-avalon.c
+++ b/driver-avalon.c
@@ -237,7 +237,6 @@ static inline bool avalon_cts(char c)
static int avalon_read(struct cgpu_info *avalon, unsigned char *buf,
size_t bufsize, int timeout, int ep)
{
- struct avalon_info *info = avalon->device_data;
size_t total = 0, readsize = bufsize + 2;
char readbuf[AVALON_READBUF_SIZE];
int err, amount, ofs = 2, cp;