
The ipxe_enabled configuration option was deprecated for quite a while, this patch removes it. However the code impact by simply removing the configuration option is quite large, so the strategy here is to register the option dynamically but sticks to False, which essentially disabled the ipxe support in the pxe interface. Story: 2007003 Task: 37779 Change-Id: I499e627f780b577e351fd39be5fa93a34d384e64