net: skbuff.h: drop duplicate words in comments

Drop doubled words in several comments.

Signed-off-by: Randy Dunlap <[e-mail]>
Cc: "David S. Miller" <[e-mail]>
Cc: [e-mail]
Signed-off-by: Jakub Kicinski <[e-mail]>

include/linux/skbuff.h

···
 			   void *target_container);
 
 /* Gets a skb connection tracking info, ctinfo map should be a
- * a map of mapsize to translate enum ip_conntrack_info states
+ * map of mapsize to translate enum ip_conntrack_info states
  * to user states.
  */
 void
···
  * must call this function to return the skb back to the stack with a
  * timestamp.
  *
- * @skb: clone of the the original outgoing packet
+ * @skb: clone of the original outgoing packet
  * @hwtstamps: hardware time stamps
  *
  */