openpower-occ-control: Remove unknown configure option

When building this package bitbake emits an error, and has sone so for
over a year:

WARNING: openpower-occ-control-1.0+gitAUTOINC+6d6d1b380a-r1
do_configure: QA Issue: openpower-occ-control: configure was passed
unrecognised options: --disable-gen_errors [unknown-configure-option]

I do not understand this flag, but it appears to be ignored by the
package so we should drop it.

Resolves https://github.com/openbmc/openbmc/issues/2941

Change-Id: Id0c6945c41bf60cae1598fdfe1f3b245942e942f
Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/recipes-phosphor/occ/openpower-occ-control_git.bb b/recipes-phosphor/occ/openpower-occ-control_git.bb
index 49adbb5..21d4438 100644
--- a/recipes-phosphor/occ/openpower-occ-control_git.bb
+++ b/recipes-phosphor/occ/openpower-occ-control_git.bb
@@ -97,9 +97,5 @@
 # Disable install_error_yaml during target build
 PACKAGECONFIG_remove_class-target = "install_error_yaml"
 
-# Disable generating elog error header file during bitbake. Applications
-# should be using the elog header generated by phosphor-logging recipe
-EXTRA_OECONF += "--disable-gen_errors"
-
 BBCLASSEXTEND += "native nativesdk"