internal/processtest: bug fix: shadernomain is no longer a valid test

Updates #2035

internal/processtest/testdata/shadernomain.go

@@ -1,57 +0,0 @@
-// Copyright 2022 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:build ignore
-// +build ignore
-
-package main
-
-import (
-	"errors"
-
-	"github.com/hajimehoshi/ebiten/v2"
-)
-
-var regularTermination = errors.New("regular termination")
-
-type Game struct {
-	shader  *ebiten.Shader
-	timeout int
-}
-
-func (g *Game) Update() error {
-	// A shader compilation error breaks the state of the graphics command queue, and this cannot be reused.
-	// Thus, a process test is appropriated.
-	g.shader, _ = ebiten.NewShader([]byte(`package main`))
-	g.timeout++
-	if g.timeout > 60 {
-		return regularTermination
-	}
-	return nil
-}
-
-func (g *Game) Draw(screen *ebiten.Image) {
-	screen.DrawRectShader(1, 1, g.shader, nil)
-}
-
-func (g *Game) Layout(width, height int) (int, int) {
-	return width, height
-}
-
-func main() {
-	if err := ebiten.RunGame(&Game{}); err != nil && err != regularTermination {
-		return
-	}
-	panic("RunGame must return an error but not")
-}