char/adi: Remove redundant less-than-zero check in adi_write()

The function parameter 'size_t count' is unsigned and cannot be less
than zero. Remove the redundant condition.

Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Link: https://lore.kernel.org/r/20250903202350.182446-2-thorsten.blum@linux.dev
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/char/adi.c

@@ -131,7 +131,7 @@ static ssize_t adi_write(struct file *file, const char __user *buf,
 	ssize_t ret;
 	int i;
 
-	if (count <= 0)
+	if (count == 0)
 		return -EINVAL;
 
 	ver_buf_sz = min_t(size_t, count, MAX_BUF_SZ);