Revert "azcanta is present in our source"

This reverts commit 8433cf900b.

cards_manual.yml

@@ -172,6 +172,14 @@ XLN:
     type: Legendary Land
     text: "(Transforms from Vance’s Blasting Cannons.)\n{T}: Add {R} to your mana pool.\n{2}{R}, {T}: Spitfire Bastion deals 3 damage to target creature or player."
     cmc: 4
+  -
+    name: Azcanta, the Sunken Ruin
+    number: 74b
+    rarity: Rare
+    url: https://media.wizards.com/2017/xln/en_Ino8szLZ1O.png
+    type: Legendary Land
+    text: "{T}: Add {U} to your mana pool.\n{2}{U}, {T}: Look at the top four cards of your library. You may reveal a noncreature, nonland card from among them and put it into your hand. Put the rest on the bottom of your library in any order."
+    cmc: 2
   -
     name: Spires of Orazca
     number: 249b