hwmon: Cleanup a bogus legacy comment

Cleanup a bogus legacy comment that has been replicated to many
hardware monitoring drivers.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

drivers/hwmon/it87.c

@@ -214,10 +214,8 @@ static const unsigned int pwm_freq[8] = {
 };
 
 
-/* For each registered IT87, we need to keep some data in memory. That
-   data is pointed to by it87_list[NR]->data. The structure itself is
-   dynamically allocated, at the same time when a new it87 client is
-   allocated. */
+/* For each registered chip, we need to keep some data in memory.
+   The structure is dynamically allocated. */
 struct it87_data {
 	struct i2c_client client;
 	struct class_device *class_dev;