diff --git a/abci/types/protoreplace/protoreplace.go b/abci/types/protoreplace/protoreplace.go
deleted file mode 100644
index 7058a70fb..000000000
--- a/abci/types/protoreplace/protoreplace.go
+++ /dev/null
@@ -1,55 +0,0 @@
-// +build ignore
-
-package main
-
-import (
-	"bytes"
-	"fmt"
-	"io/ioutil"
-	"os"
-	"os/exec"
-	"regexp"
-	"strings"
-)
-
-// This script replaces most `[]byte` with `data.Bytes` in a `.pb.go` file.
-// It was written before we realized we could use `gogo/protobuf` to achieve
-// this more natively. So it's here for safe keeping in case we ever need to
-// abandon `gogo/protobuf`.
-
-func main() {
-	bytePattern := regexp.MustCompile("[[][]]byte")
-	const oldPath = "types/types.pb.go"
-	const tmpPath = "types/types.pb.new"
-	content, err := ioutil.ReadFile(oldPath)
-	if err != nil {
-		panic("cannot read " + oldPath)
-		os.Exit(1)
-	}
-	lines := bytes.Split(content, []byte("\n"))
-	outFile, _ := os.Create(tmpPath)
-	wroteImport := false
-	for _, line_bytes := range lines {
-		line := string(line_bytes)
-		gotPackageLine := strings.HasPrefix(line, "package ")
-		writeImportTime := strings.HasPrefix(line, "import ")
-		containsDescriptor := strings.Contains(line, "Descriptor")
-		containsByteArray := strings.Contains(line, "[]byte")
-		if containsByteArray && !containsDescriptor {
-			line = string(bytePattern.ReplaceAll([]byte(line), []byte("data.Bytes")))
-		}
-		if writeImportTime && !wroteImport {
-			wroteImport = true
-			fmt.Fprintf(outFile, "import \"github.com/tendermint/go-amino/data\"\n")
-
-		}
-		if gotPackageLine {
-			fmt.Fprintf(outFile, "%s\n", "//nolint: gas")
-		}
-		fmt.Fprintf(outFile, "%s\n", line)
-	}
-	outFile.Close()
-	os.Remove(oldPath)
-	os.Rename(tmpPath, oldPath)
-	exec.Command("goimports", "-w", oldPath)
-}