doc: removed superfluous (and broken) @file params

sys/net/include/ieee802154_frame.h

@@ -12,7 +12,7 @@
  * @brief   IEEE802.15.4 adapaption layer
  * @{
  *
- * @file    ieee802154/ieee802154_frame.h
+ * @file
  * @brief   IEEE 802.14.4 framing data structs and prototypes
  *
  * @author  Stephan Zeisberg <zeisberg@mi.fu-berlin.de>

sys/net/include/rpl/rpl_storing.h

@@ -11,7 +11,7 @@
  * @brief       Routing Protocol for Low power and Lossy Networks
  * @{
  *
- * @file        rpl_mode.h
+ * @file
  * @brief       RPL storing-mode header
  *
  * Header which includes all mode related RPL-functions. All functions are mandatory for any

sys/net/network_layer/sixlowpan/border/border.h

@@ -9,7 +9,7 @@
  *
  * @ingroup sixlowpan
  * @{
- * @file    sixlowborder.h
+ * @file
  * @brief   header for 6lowpan border router
  * @author  Martin Lenders <mlenders@inf.fu-berlin.de>
  * @author  Oliver Hahm <oliver.hahm@inria.fr>

sys/net/network_layer/sixlowpan/icmp.h

@@ -11,7 +11,7 @@
 /**
  * @ingroup net_sixlowpan
  * @{
- * @file    sixlowpan/icmp.h
+ * @file
  * @brief   6lowpan neighbor discovery constants, data structs, and prototypes
  * @author  Stephan Zeisberg <zeisberg@mi.fu-berlin.de>
  * @author  Martin Lenders <mlenders@inf.fu-berlin.de>

sys/net/transport_layer/tcp/tcp_hc.h

@@ -8,7 +8,7 @@
 
 /**
  * @{
- * @file    tcp_hc.c
+ * @file
  * @author  Oliver Gesch <oliver.gesch@googlemail.com>
  */
 #ifndef TCP_HC_H_