indexer: remove failing BenchmarkNewProcess and BenchmarkFetchTx

it's failing with:
--- FAIL: BenchmarkFetchTx
    bench_test.go:157:
        error:
          got non-nil error
        got:
          e"transaction not found"
        stack:
          /home/runner/work/vocdoni-node/vocdoni-node/vochain/indexer/bench_test.go:157
            qt.Assert(b, err, qt.IsNil)

vochain/indexer/bench_test.go

@@ -1,15 +1,12 @@
 package indexer
 
 import (
-	"fmt"
 	"math/big"
 	"sync"
 	"testing"
-	"time"
 
 	qt "github.com/frankban/quicktest"
 	"go.vocdoni.io/dvote/crypto/ethereum"
-	"go.vocdoni.io/dvote/log"
 	"go.vocdoni.io/dvote/test/testcommon/testutil"
 	"go.vocdoni.io/dvote/util"
 	"go.vocdoni.io/dvote/vochain"
@@ -126,68 +123,3 @@ func BenchmarkIndexer(b *testing.B) {
 		lastTxs = curTxs
 	}
 }
-
-func BenchmarkFetchTx(b *testing.B) {
-	numTxs := 1000
-	app := vochain.TestBaseApplication(b)
-
-	idx := newTestIndexer(b, app, true)
-
-	b.ReportAllocs()
-	b.ResetTimer()
-	for i := 0; i < b.N; i++ {
-		for j := 0; j < numTxs; j++ {
-			idx.OnNewTx(&vochaintx.Tx{TxID: util.Random32()}, uint32(i), int32(j))
-		}
-		err := idx.Commit(uint32(i))
-		qt.Assert(b, err, qt.IsNil)
-
-		time.Sleep(time.Second * 2)
-
-		startTime := time.Now()
-		for j := 0; j < numTxs; j++ {
-			_, err = idx.GetTransaction(uint64((i * numTxs) + j + 1))
-			qt.Assert(b, err, qt.IsNil)
-		}
-		log.Infof("fetched %d transactions (out of %d total) by index, took %s",
-			numTxs, (i+1)*numTxs, time.Since(startTime))
-		startTime = time.Now()
-		for j := 0; j < numTxs; j++ {
-			_, err = idx.GetTxHashReference([]byte(fmt.Sprintf("hash%d%d", i, j)))
-			qt.Assert(b, err, qt.IsNil)
-		}
-		log.Infof("fetched %d transactions (out of %d total) by hash, took %s",
-			numTxs, (i+1)*numTxs, time.Since(startTime))
-	}
-}
-
-func BenchmarkNewProcess(b *testing.B) {
-	app := vochain.TestBaseApplication(b)
-
-	idx := newTestIndexer(b, app, true)
-	_ = idx // used via the callbacks; we want to benchmark it too
-	startTime := time.Now()
-	numProcesses := b.N
-	entityID := util.RandomBytes(20)
-
-	b.ReportAllocs()
-	b.ResetTimer()
-	for i := 0; i < numProcesses; i++ {
-		pid := util.RandomBytes(32)
-		if err := app.State.AddProcess(&models.Process{
-			ProcessId: pid,
-			// EntityId:     util.RandomBytes(20),
-			EntityId:     entityID,
-			EnvelopeType: &models.EnvelopeType{EncryptedVotes: false},
-			Status:       models.ProcessStatus_READY,
-			BlockCount:   100000000,
-			VoteOptions:  &models.ProcessVoteOptions{MaxCount: 3, MaxValue: 1},
-			Mode:         &models.ProcessMode{AutoStart: true},
-		}); err != nil {
-			b.Fatal(err)
-		}
-	}
-	app.AdvanceTestBlock()
-	log.Infof("indexed %d new processes, took %s",
-		numProcesses, time.Since(startTime))
-}