Revert restAccept workaround. (#3369)

Bump fixed version of nim-presto.

beacon_chain/spec/eth2_apis/rest_beacon_calls.nim

@@ -116,9 +116,7 @@ proc getBlockPlain*(block_id: BlockIdent): RestPlainResponse {.
   ## https://ethereum.github.io/beacon-APIs/#/Beacon/getBlock
 
 proc getBlock*(client: RestClientRef, block_id: BlockIdent,
-               restAccept = preferSSZ): Future[ForkedSignedBeaconBlock] {.async.} =
-  # TODO restAccept should be "" by default, but for some reason that doesn't
-  #      work
+               restAccept = ""): Future[ForkedSignedBeaconBlock] {.async.} =
   let resp =
     if len(restAccept) > 0:
       await client.getBlockPlain(block_id, restAcceptType = restAccept)
@@ -162,12 +160,10 @@ proc getBlockV2Plain*(block_id: BlockIdent): RestPlainResponse {.
 
 proc getBlockV2*(client: RestClientRef, block_id: BlockIdent,
                  cfg: RuntimeConfig,
-                 restAccept = preferSSZ): Future[Option[ForkedSignedBeaconBlock]] {.
+                 restAccept = ""): Future[Option[ForkedSignedBeaconBlock]] {.
      async.} =
   # Return the asked-for block, or None in case 404 is returned from the server.
   # Raises on other errors
-  # TODO restAccept should be "" by default, but for some reason that doesn't
-  #      work
   let resp =
     if len(restAccept) > 0:
       await client.getBlockV2Plain(block_id, restAcceptType = restAccept)

beacon_chain/spec/eth2_apis/rest_debug_calls.nim

@@ -20,9 +20,7 @@ proc getStatePlain*(state_id: StateIdent): RestPlainResponse {.
   ## https://ethereum.github.io/beacon-APIs/#/Beacon/getState
 
 proc getState*(client: RestClientRef, state_id: StateIdent,
-               restAccept = preferSSZ): Future[phase0.BeaconState] {.async.} =
-  # TODO restAccept should be "" by default, but for some reason that doesn't
-  #      work
+               restAccept = ""): Future[phase0.BeaconState] {.async.} =
   let resp =
     if len(restAccept) > 0:
       await client.getStatePlain(state_id, restAcceptType = restAccept)
@@ -80,12 +78,10 @@ proc getStateV2Plain*(state_id: StateIdent): RestPlainResponse {.
   ## https://ethereum.github.io/beacon-APIs/#/Debug/getStateV2
 
 proc getStateV2*(client: RestClientRef, state_id: StateIdent,
-                 cfg: RuntimeConfig,
-                 restAccept = preferSSZ): Future[ref ForkedHashedBeaconState] {.async.} =
+                 cfg: RuntimeConfig, restAccept = ""
+                ): Future[ref ForkedHashedBeaconState] {.async.} =
   # nil is returned if the state is not found due to a 404 - `ref` is needed
   # to manage stack usage
-  # TODO restAccept should be "" by default, but for some reason that doesn't
-  #      work
   let resp =
     if len(restAccept) > 0:
       await client.getStateV2Plain(state_id, restAcceptType = restAccept)

vendor/nim-presto

@@ -1 +1 @@
-Subproject commit 22746c5cd20522176a4a4de1d660c735087517e9
+Subproject commit 668a2369f666e0753983ae34eaa88363a6dd823c