cmd/ebitenmobile: use go:embed

Updates #1258

cmd/ebitenmobile/generate.go

@@ -1,17 +0,0 @@
-// Copyright 2019 The Ebiten Authors
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-//go:generate go run github.com/hajimehoshi/file2byteslice/cmd/file2byteslice@v1.0.0 -package=main -input=gobind.go -output=gobind.src.go -var gobindsrc
-
-package main

cmd/ebitenmobile/gomobile.go

@@ -15,6 +15,7 @@
 package main
 
 import (
+	_ "embed"
 	"fmt"
 	"io/ioutil"
 	"os"
@@ -23,6 +24,9 @@ import (
 	"runtime"
 )
 
+//go:embed gobind.go
+var gobind_go []byte
+
 const gomobileHash = "aaac322e2105241d1ac9a25b03d4e916ac6e42c6"
 
 func runCommand(command string, args []string, env []string) error {
@@ -156,7 +160,7 @@ import (
 	if err := os.Mkdir("src", 0755); err != nil {
 		return tmp, err
 	}
-	if err := ioutil.WriteFile(filepath.Join("src", "gobind.go"), gobindsrc, 0644); err != nil {
+	if err := ioutil.WriteFile(filepath.Join("src", "gobind.go"), gobind_go, 0644); err != nil {
 		return tmp, err
 	}