[Client/Website] Removed items are still displayed in Item Sets

There are several items that have been removed from the game, but are still available for use in Item Sets and are displayed on the official website's full inventory of items:

• Madred's Razors
• Wriggle's Lantern
• Grez's Spectral Lantern
• Doran's Blade (Showdown)
• Doran's Ring (Showdown)
• Doran's Shield (Showdown)
• Staff of Flowing Water (from Black Market Brawlers)

Additionally, The Black Spear does not have an icon within Item Sets (though it does on the website).

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Full set of my unresolved bug report threads:

• Match History still calls north team "Purple"
• Team Builder lobby doesn't dissolve if an invited player disconnects
• Zyra passive can't be fired with an unranked ability's key
• Ahri R should start cooldown upon death
• Targeted abilities sometimes fizzle if their target moves away
• Storm Shield relics on Crystal Scar can be displaced
• Orianna's Ball may return while distance indicator is still yellow
• "Enable HUD animations" does nothing; "Disable minimap movement" ignores some input
• Galio W doesn't provoke heal from Twitch passive
• Teemo passive prevents capture of a neutral Twisted Treeline altar
• Anivia passive doesn't trigger if killed by Razorfins
• Vilemaw death timer not appearing
• Item Set construction doesn't properly label items' map availability
• Removed items are still displayed in Item Sets
• Zyra passive on quick cast is erratic
• Zyra can use trinket while in passive
• Inactive Heimerdinger turrets not damaged by Rift Herald

I will be bumping these threads periodically, though in a way that avoids flooding.