x200/devicetree: Remove extraneous eventc.

Change-Id: If72daed326216e24da85a6a9d342f36f4e1d9de5
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/7685
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Tested-by: build bot (Jenkins)
diff --git a/src/mainboard/lenovo/x200/devicetree.cb b/src/mainboard/lenovo/x200/devicetree.cb
index acc6c3a..edd3c64 100644
--- a/src/mainboard/lenovo/x200/devicetree.cb
+++ b/src/mainboard/lenovo/x200/devicetree.cb
@@ -169,7 +169,6 @@
 					register "event5_enable" = "0x3c"
 					register "event6_enable" = "0x80"
 					register "event7_enable" = "0x01"
-					register "eventc_enable" = "0x3c"
 					register "event8_enable" = "0x01"
 					register "event9_enable" = "0xff"
 					register "eventa_enable" = "0xff"