First stab on removing unused code (at least by LL)

Makefile

@@ -115,18 +115,6 @@ proto-check-breaking-ci:
 	@$(DOCKER_BUF) check breaking --against-input $(HTTPS_GIT)#branch=master
 .PHONY: proto-check-breaking-ci
 
-###############################################################################
-###                              Build ABCI                                 ###
-###############################################################################
-
-build_abci:
-	@go build -mod=readonly -i ./abci/cmd/...
-.PHONY: build_abci
-
-install_abci:
-	@go install -mod=readonly ./abci/cmd/...
-.PHONY: install_abci
-
 ###############################################################################
 ###                              Distribution                               ###
 ###############################################################################

abci/client/client.go

@@ -2,19 +2,14 @@ package abcicli
 
 import (
 	"context"
-	"fmt"
+
 	"sync"
 
 	"github.com/lazyledger/lazyledger-core/abci/types"
 	"github.com/lazyledger/lazyledger-core/libs/service"
 	tmsync "github.com/lazyledger/lazyledger-core/libs/sync"
 )
 
-const (
-	dialRetryIntervalSeconds = 3
-	echoRetryIntervalSeconds = 1
-)
-
 //go:generate mockery --case underscore --name Client
 
 // Client defines an interface for an ABCI client.
@@ -66,24 +61,6 @@ type Client interface {
 	PreprocessTxsSync(context.Context, types.RequestPreprocessTxs) (*types.ResponsePreprocessTxs, error)
 }
 
-//----------------------------------------
-
-// NewClient returns a new ABCI client of the specified transport type.
-// It returns an error if the transport is not "socket" or "grpc"
-func NewClient(addr, transport string, mustConnect bool) (client Client, err error) {
-	switch transport {
-	case "socket":
-		client = NewSocketClient(addr, mustConnect)
-	case "grpc":
-		client = NewGRPCClient(addr, mustConnect)
-	default:
-		err = fmt.Errorf("unknown abci transport %s", transport)
-	}
-	return
-}
-
-//----------------------------------------
-
 type Callback func(*types.Request, *types.Response)
 
 //----------------------------------------