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>

docs/sophia_syntax.md

@@ -28,8 +28,6 @@ interface main using as for hiding
 - `Char` character literal enclosed in `'` with escape character `\`
 - `AccountAddress` base58-encoded 32 byte account pubkey with `ak_` prefix
 - `ContractAddress` base58-encoded 32 byte contract address with `ct_` prefix
-- `OracleAddress` base58-encoded 32 byte oracle address with `ok_` prefix
-- `OracleQueryId` base58-encoded 32 byte oracle query id with `oq_` prefix
 - `Signature` base58-encoded 64 byte cryptographic signature with `sg_` prefix
 
 Valid string escape codes are
@@ -46,7 +44,7 @@ Valid string escape codes are
 | `\xHexDigits` | *HexDigits* |   |
 
 
-See the [identifier encoding scheme](https://github.com/aeternity/protocol/blob/master/node/api/api_encoding.md) for the
+See the [identifier encoding scheme](https://git.qpq.swiss/QPQ-AG/protocol/src/branch/master/node/api/api_encoding.md) for the
 details on the base58 literals.
 
 ## Layout blocks
@@ -239,7 +237,6 @@ Expr ::= '(' LamArgs ')' '=>' Block(Stmt)   // Anonymous function    (x) => x +
        | Id | Con | QId | QCon              // Identifiers           x, None, Map.member, AELib.Token
        | Int | Bytes | String | Char        // Literals              123, 0xff, #00abc123, "foo", '%'
        | AccountAddress | ContractAddress   // Chain identifiers
-       | OracleAddress | OracleQueryId      // Chain identifiers
        | Signature                          // Signature
        | '???'                              // Hole expression       1 + ???