FeatureFlags: Revert managing feature flags outside of settings.Cfg (#44382)

* Revert "FeatureToggles: register all enterprise feature toggles (#44336)"

This reverts commit f53b3fb007.

* Revert "FeatureFlags: manage feature flags outside of settings.Cfg (#43692)"

This reverts commit f94c0decbd.

pkg/services/featuremgmt/toggles_gen_test.go

@@ -1,140 +0,0 @@
-package featuremgmt
-
-import (
-	"bytes"
-	"fmt"
-	"html/template"
-	"io/ioutil"
-	"os"
-	"path/filepath"
-	"strings"
-	"testing"
-	"unicode"
-
-	"github.com/google/go-cmp/cmp"
-)
-
-func TestFeatureToggleFiles(t *testing.T) {
-	// Typescript files
-	verifyAndGenerateFile(t,
-		"../../../packages/grafana-data/src/types/featureToggles.gen.ts",
-		generateTypeScript(),
-	)
-
-	// Golang files
-	verifyAndGenerateFile(t,
-		"toggles_gen.go",
-		generateRegistry(t),
-	)
-}
-
-func verifyAndGenerateFile(t *testing.T, fpath string, gen string) {
-	// nolint:gosec
-	// We can ignore the gosec G304 warning since this is a test and the function is only called explicitly above
-	body, err := ioutil.ReadFile(fpath)
-	if err == nil {
-		if diff := cmp.Diff(gen, string(body)); diff != "" {
-			str := fmt.Sprintf("body mismatch (-want +got):\n%s\n", diff)
-			err = fmt.Errorf(str)
-		}
-	}
-
-	if err != nil {
-		e2 := os.WriteFile(fpath, []byte(gen), 0644)
-		if e2 != nil {
-			t.Errorf("error writing file: %s", e2.Error())
-		}
-		abs, _ := filepath.Abs(fpath)
-		t.Errorf("feature toggle do not match: %s (%s)", err.Error(), abs)
-		t.Fail()
-	}
-}
-
-func generateTypeScript() string {
-	buf := `// NOTE: This file was auto generated.  DO NOT EDIT DIRECTLY!
-// To change feature flags, edit:
-//  pkg/services/featuremgmt/registry.go
-// Then run tests in:
-//  pkg/services/featuremgmt/toggles_gen_test.go
-
-/**
- * Describes available feature toggles in Grafana. These can be configured via
- * conf/custom.ini to enable features under development or not yet available in
- * stable version.
- *
- * Only enabled values will be returned in this interface
- *
- * @public
- */
-export interface FeatureToggles {
-  [name: string]: boolean | undefined; // support any string value
-
-`
-	for _, flag := range standardFeatureFlags {
-		buf += "  " + getTypeScriptKey(flag.Name) + "?: boolean;\n"
-	}
-
-	buf += "}\n"
-	return buf
-}
-
-func getTypeScriptKey(key string) string {
-	if strings.Contains(key, "-") || strings.Contains(key, ".") {
-		return "['" + key + "']"
-	}
-	return key
-}
-
-func isLetterOrNumber(c rune) bool {
-	return !unicode.IsLetter(c) && !unicode.IsNumber(c)
-}
-
-func asCamelCase(key string) string {
-	parts := strings.FieldsFunc(key, isLetterOrNumber)
-	for idx, part := range parts {
-		parts[idx] = strings.Title(part)
-	}
-	return strings.Join(parts, "")
-}
-
-func generateRegistry(t *testing.T) string {
-	tmpl, err := template.New("fn").Parse(`
-// Is{{.CamleCase}}Enabled checks for the flag: {{.Flag.Name}}{{.Ext}}
-func (ft *FeatureToggles) Is{{.CamleCase}}Enabled() bool {
-	return ft.manager.IsEnabled("{{.Flag.Name}}")
-}
-`)
-	if err != nil {
-		t.Fatal("error reading template", "error", err.Error())
-		return ""
-	}
-
-	data := struct {
-		CamleCase string
-		Flag      FeatureFlag
-		Ext       string
-	}{
-		CamleCase: "?",
-	}
-
-	var buff bytes.Buffer
-
-	buff.WriteString(`// NOTE: This file is autogenerated
-
-package featuremgmt
-`)
-
-	for _, flag := range standardFeatureFlags {
-		data.CamleCase = asCamelCase(flag.Name)
-		data.Flag = flag
-		data.Ext = ""
-
-		if flag.Description != "" {
-			data.Ext += "\n// " + flag.Description
-		}
-
-		_ = tmpl.Execute(&buff, data)
-	}
-
-	return buff.String()
-}