remove_other_grand_guardian_modifiers_effect

remove_other_grand_guardian_modifiers_effect = {
	hidden_effect = { # No need to show this
		# Let's check for the county opinion modifier first
		scope:liege ?= {
			# We check and scope to all counties to make sure we remove any stray modifiers in case the capital is moved, etc.
			every_realm_county = {
				limit = {
					any_county_province = {
						has_province_modifier = grand_guardian_guard_the_capital_modifier
					}
				}
				every_county_province = {
					limit = {
						has_province_modifier = grand_guardian_guard_the_capital_modifier
					}
					remove_province_modifier = grand_guardian_guard_the_capital_modifier
				}
			}
		}
	}
}

As written in game/common/scripted_effects/10_dlc_tgp_scripted_effects.txt.