Fix Go Builds (#7123)

* change to ssz DeepEqual
* gaz

Author: nisdas

beacon-chain/sync/BUILD.bazel

@@ -91,6 +91,7 @@ go_library(
         "@com_github_prometheus_client_golang//prometheus:go_default_library",
         "@com_github_prometheus_client_golang//prometheus/promauto:go_default_library",
         "@com_github_prysmaticlabs_ethereumapis//eth/v1alpha1:go_default_library",
+        "@com_github_prysmaticlabs_go_ssz//:go_default_library",
         "@com_github_sirupsen_logrus//:go_default_library",
         "@io_opencensus_go//trace:go_default_library",
     ],

beacon-chain/sync/pending_blocks_queue.go

@@ -6,7 +6,8 @@ import (
 	"sort"
 	"sync"
 
-	"github.com/gogo/protobuf/proto"
+	"github.com/prysmaticlabs/go-ssz"
+
 	"github.com/pkg/errors"
 	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
@@ -262,7 +263,7 @@ func (s *Service) deleteBlockFromPendingQueue(slot uint64, b *ethpb.SignedBeacon
 	}
 	newBlks := make([]*ethpb.SignedBeaconBlock, 0, len(blks))
 	for _, blk := range blks {
-		if proto.Equal(blk, b) {
+		if ssz.DeepEqual(blk, b) {
 			continue
 		}
 		newBlks = append(newBlks, blk)