i7core_edac: Drop unused variable

Fix the following warning:

drivers/edac/i7core_edac.c: In function "core_mce_output_error":
drivers/edac/i7core_edac.c:1711:8: warning: variable "type" set but not used [-Wunused-but-set-variable]
  char *type, *optype, *err;
        ^
According to Mauro, type can just be dropped, as tp_event now maps if
the error is corrected, uncorrected non-fatal or uncorrected fatal
one.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Link: http://lkml.kernel.org/r/20140224171358.692d7e5a@endymion.delvare
Acked-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Cc: Doug Thompson <dougthompson@xmission.com>
Signed-off-by: Borislav Petkov <bp@suse.de>