Renaming and preparing to remove oracles (#985)

A few references to oracles still remain, but they have been removed as a feature, at least.

Reviewed-on: #985
Reviewed-by: Ulf Wiger <ulfwiger@qpq.swiss>
Co-authored-by: Craig Everett <zxq9@zxq9.com>
Co-committed-by: Craig Everett <zxq9@zxq9.com>

test/contracts/aens_update.aes

@@ -14,7 +14,7 @@ main contract AENSUpdate =
     let p5 : AENSv2.pointee = AENSv2.DataPt(String.to_bytes("any something will do"))
     let p6 : AENSv2.pointee = AENSv2.DataPt(Int.to_bytes(1345, 4))
     AENSv2.update(owner, name, None, None,
-                  Some({ ["account_pubkey"] = p1, ["oracle_pubkey"] = p2,
+                  Some({ ["account_pubkey"] = p1,
                          ["contract_pubkey"] = p3, ["misc"] = p4, ["data"] = p5, ["data2"] = p6 }))
 
   stateful entrypoint old_interaction(c : OldAENSContract, owner : address, name : string) =
@@ -27,6 +27,3 @@ main contract AENSUpdate =
   entrypoint get_ttl(name : string) =
     switch(AENSv2.lookup(name))
      Some(AENSv2.Name(_, FixedTTL(ttl), _)) => ttl
-
-  entrypoint expiry(o : oracle(int, int)) : int =
-    Oracle.expiry(o)