[generator] Remove redundant mage targets in metricbeat generator mag…

…efile (#13341)

* remove redundant mage targets in metricbeat generator

CHANGELOG-developer.next.asciidoc

@@ -21,6 +21,7 @@ The list below covers the major changes between 7.0.0-rc2 and master only.
 ==== Breaking changes
 
 - Move Fields from package libbeat/common to libbeat/mapping. {pull}11198[11198]
+- For "metricbeat style" generated custom beats, the mage target `GoTestIntegration` has changed to `GoIntegTest` and `GoTestUnit` has changed to `GoUnitTest`. {pull}13341[13341]
 
 ==== Bugfixes
 

generator/metricbeat/{beat}/magefile.go

@@ -20,7 +20,6 @@
 package main
 
 import (
-	"context"
 	"fmt"
 	"time"
 
@@ -32,6 +31,16 @@ import (
 
 	// mage:import
 	_ "github.com/elastic/beats/dev-tools/mage/target/common"
+	// mage:import
+	"github.com/elastic/beats/dev-tools/mage/target/build"
+	// mage:import
+	"github.com/elastic/beats/dev-tools/mage/target/pkg"
+	// mage:import
+	_ "github.com/elastic/beats/dev-tools/mage/target/test"
+	// mage:import
+	_ "github.com/elastic/beats/dev-tools/mage/target/unittest"
+	// mage:import
+	_ "github.com/elastic/beats/dev-tools/mage/target/integtest"
 )
 
 func init() {
@@ -40,37 +49,11 @@ func init() {
 	devtools.BeatDescription = "One sentence description of the Beat."
 }
 
-//CollectAll generates the docs and the fields.
+// CollectAll generates the docs and the fields.
 func CollectAll() {
 	mg.Deps(CollectDocs, FieldsDocs)
 }
 
-// Build builds the Beat binary.
-func Build() error {
-	return devtools.Build(devtools.DefaultBuildArgs())
-}
-
-// GolangCrossBuild build the Beat binary inside of the golang-builder.
-// Do not use directly, use crossBuild instead.
-func GolangCrossBuild() error {
-	return devtools.GolangCrossBuild(devtools.DefaultGolangCrossBuildArgs())
-}
-
-// BuildGoDaemon builds the go-daemon binary (use crossBuildGoDaemon).
-func BuildGoDaemon() error {
-	return devtools.BuildGoDaemon()
-}
-
-// CrossBuild cross-builds the beat for all target platforms.
-func CrossBuild() error {
-	return devtools.CrossBuild()
-}
-
-// CrossBuildGoDaemon cross-builds the go-daemon binary using Docker.
-func CrossBuildGoDaemon() error {
-	return devtools.CrossBuildGoDaemon()
-}
-
 // Package packages the Beat for distribution.
 // Use SNAPSHOT=true to build snapshots.
 // Use PLATFORMS to control the target platforms.
@@ -81,13 +64,8 @@ func Package() {
 	devtools.UseCommunityBeatPackaging()
 
 	mg.Deps(Update)
-	mg.Deps(CrossBuild, CrossBuildGoDaemon)
-	mg.SerialDeps(devtools.Package, TestPackages)
-}
-
-// TestPackages tests the generated packages (i.e. file modes, owners, groups).
-func TestPackages() error {
-	return devtools.TestPackages()
+	mg.Deps(build.CrossBuild, build.CrossBuildGoDaemon)
+	mg.SerialDeps(devtools.Package, pkg.PackageTest)
 }
 
 // Update updates the generated files (aka make update).
@@ -118,20 +96,6 @@ func CollectDocs() error {
 	return metricbeat.CollectDocs()
 }
 
-// GoTestUnit executes the Go unit tests.
-// Use TEST_COVERAGE=true to enable code coverage profiling.
-// Use RACE_DETECTOR=true to enable the race detector.
-func GoTestUnit(ctx context.Context) error {
-	return devtools.GoTest(ctx, devtools.DefaultGoTestUnitArgs())
-}
-
-// GoTestIntegration executes the Go integration tests.
-// Use TEST_COVERAGE=true to enable code coverage profiling.
-// Use RACE_DETECTOR=true to enable the race detector.
-func GoTestIntegration(ctx context.Context) error {
-	return devtools.GoTest(ctx, devtools.DefaultGoTestIntegrationArgs())
-}
-
 // Config generates both the short/reference/docker configs.
 func Config() error {
 	customDeps := devtools.ConfigFileParams{