[PATCH] tpm: tpm_bios remove unused variable

Remove event_data_size since it was pointed out in tpm_bios-indexing-
fix.patch that is was ugly and it wasn't actually being used.

Signed-off-by: Kylene Hall <kjhall@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>