Simplify the refreshing of the visibility header on lock/unlock

Bar.lua

@@ -347,23 +347,11 @@ function Bar:ApplyVisibilityDriver()
 	-- default state is shown
 	local driver = table_concat(self.hidedriver, ";")
 	RegisterStateDriver(self, "vis", driver)
-	
-	local state = self:GetAttribute("state-vis")
-	if state == "hide" then
-		self:Hide()
-	elseif state == "show" or state == "fade" then
-		self:Show()
-		self:SetAttribute("fade", (state == "fade"))
-	end
 end
 
 function Bar:DisableVisibilityDriver()
 	UnregisterStateDriver(self, "vis")
-	self:Show()
-	self:SetScript("OnUpdate", nil)
-	self:SetAttribute("fade", nil)
-	self.faded = nil
-	self:SetConfigAlpha()
+	self:SetAttribute("state-vis", "show")
 end
 
 function Bar:GetVisibilityOption(option, index)