MLO ended up not really fully stable yet, we want to make
sure it works well with the ecosystem before enabling it.
Thus, remove the flag, but set WIPHY_FLAG_DISABLE_WEXT so
we don't get wireless extensions back until we enable MLO
for this hardware.

Cc: stable@vger.kernel.org
Reviewed-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240314110951.d6ad146df98d.I47127e4fdbdef89e4ccf7483641570ee7871d4e6@changeidSigned-off-by: Johannes Berg <johannes.berg@intel.com>