[DEL] Remove deprecated translations

addons/account/i18n/en_US.po

addons/account_analytic_plans/i18n/ar.po

addons/account_analytic_plans/i18n/bg.po

addons/account_analytic_plans/i18n/bs.po

addons/account_analytic_plans/i18n/ca.po

addons/account_analytic_plans/i18n/cs.po

addons/account_analytic_plans/i18n/da.po

addons/account_analytic_plans/i18n/de.po

addons/account_analytic_plans/i18n/el.po

addons/account_analytic_plans/i18n/en_GB.po

addons/account_analytic_plans/i18n/es.po

addons/account_analytic_plans/i18n/es_AR.po

addons/account_analytic_plans/i18n/es_CR.po

addons/account_analytic_plans/i18n/es_EC.po

addons/account_analytic_plans/i18n/es_MX.po

addons/account_analytic_plans/i18n/es_PY.po

addons/account_analytic_plans/i18n/es_VE.po

addons/account_analytic_plans/i18n/et.po

addons/account_analytic_plans/i18n/fa.po

addons/account_analytic_plans/i18n/fi.po