phosphor-dbus-interfaces: remove unnecessary config flags
phosphor-dbus-interfaces: remove unnecessary config flags

With Ibb65eddd6c3a3e32f64f4ddf7ac5da4526cab2b7, the PDI repo
enables all interfaces by default, so explicitly enabling some
of them is not necessary.  Remove the config_flags.

Signed-off-by: Patrick Williams <cbb7353e6d953ef360baf960c122346276c6e320@stwcx.xyz>
Change-Id: Ie7954198d9475198cbb0f85dc7f4d0b5dc378480

openbmc/openbmc-build-scripts,openbmc/openbmc-build-scripts