[doc] Remove separate doc build package list
[doc] Remove separate doc build package list

Signed-off-by: Colin O'Flynn <231cfa21ee07750b1ff0cfe24d148f3a2222879c@newae.com>

lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan