Kill an erroneous .erase introduced in r900

Corresponding to flashrom svn r901.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
diff --git a/flashchips.c b/flashchips.c
index db67a47..cfe9dba 100644
--- a/flashchips.c
+++ b/flashchips.c
@@ -2342,7 +2342,6 @@
 		.tested		= TEST_UNTESTED,
 		.probe		= probe_82802ab,
 		.probe_timing	= TIMING_ZERO,	/* Datasheet has no timing info specified */
-		.erase		= NULL,
 		.block_erasers	=
 		{
 			{