(chore/OptionsFrame): Remove Midnight support ending warning

The notice was intentionally kept for two releases to inform users about the
upcoming end of Midnight support. It is now removed, as the message should
have reached users.

(cherry picked from commit f524ab5c840f00d45f771423c9b1b2ecb72bf08f)

WeakAurasOptions/OptionsFrames/OptionsFrame.lua

@@ -1609,7 +1609,7 @@ function OptionsPrivate.CreateFrame()
   local left, right, top, bottom = w/2,-w/2, 0, h-25
   frame:SetClampRectInsets(left, right, top, bottom)
 
-  -- Add warning about Midnight support ending, to notify users about possible coming changes
+  --[[ Add warning about Midnight support ending, to notify users about possible coming changes
   local midnightWarning = CreateFrame("Frame", nil, frame)
   midnightWarning:SetBackdrop({
     bgFile = "Interface\\Addons\\WeakAuras\\Media\\Textures\\Square_FullWhite.tga",
@@ -1642,7 +1642,7 @@ function OptionsPrivate.CreateFrame()
     midnightWarning:Hide()
   end)
 
-  fade:Play()
+  fade:Play()]]
 
   return frame
 end