net: freescale: ucc_geth: remove unused SKB_ALLOC_TIMEOUT

This was added in commit ce973b141dfa ("[PATCH] Freescale QE UCC gigabit
ethernet driver") but doesn't appear to have been used. Remove it now.

Signed-off-by: Chris Packham <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Jakub Kicinski <[e-mail]>

drivers/net/ethernet/freescale/ucc_geth.h

···
 							   addresses */
 
 #define TX_TIMEOUT                              (1*HZ)
-#define SKB_ALLOC_TIMEOUT                       100000
 #define PHY_INIT_TIMEOUT                        100000
 #define PHY_CHANGE_TIME                         2