Address test todos by removing -txindex to nodes.

Originally added when updating getrawtransaction to stop searching unspent utxos.

doc/REST-interface.md

@@ -20,7 +20,8 @@ Supported API
 
 Given a transaction hash: returns a transaction in binary, hex-encoded binary, or JSON formats.
 
-For full TX query capability, one must enable the transaction index via "txindex=1" command line / configuration option.
+By default, this endpoint will only search the mempool.
+To query for a confirmed transaction, enable the transaction index via "txindex=1" command line / configuration option.
 
 #### Blocks
 `GET /rest/block/<BLOCK-HASH>.<bin|hex|json>`