net/tokenring/olympic.c: remove unused variable

Recent changes in Linus' tree removed all uses of a variable, resulteing in the following warning:

<-- snip -->

...
CC drivers/net/tokenring/olympic.o
drivers/net/tokenring/olympic.c: In function `olympic_arb_cmd':
drivers/net/tokenring/olympic.c:1404: warning: unused variable `i'
...

<-- snip -->

The following patch removes this unused variable:

@@ -1401,7 +1401,6 @@
 	u16 lan_status = 0, lan_status_diff  ; /* Initialize to stop compiler warning */
 	u8 fdx_prot_error ; 
 	u16 next_ptr;
-	int i ; 
 
 	arb_block = (olympic_priv->olympic_lap + olympic_priv->arb) ; 
 	asb_block = (olympic_priv->olympic_lap + olympic_priv->asb) ;