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/features.go

@@ -1,95 +0,0 @@
-package featuremgmt
-
-import (
-	"bytes"
-	"encoding/json"
-)
-
-// FeatureToggleState indicates the quality level
-type FeatureToggleState int
-
-const (
-	// FeatureStateUnknown indicates that no state is specified
-	FeatureStateUnknown FeatureToggleState = iota
-
-	// FeatureStateAlpha the feature is in active development and may change at any time
-	FeatureStateAlpha
-
-	// FeatureStateBeta the feature is still in development, but settings will have migrations
-	FeatureStateBeta
-
-	// FeatureStateStable this is a stable feature
-	FeatureStateStable
-
-	// FeatureStateDeprecated the feature will be removed in the future
-	FeatureStateDeprecated
-)
-
-func (s FeatureToggleState) String() string {
-	switch s {
-	case FeatureStateAlpha:
-		return "alpha"
-	case FeatureStateBeta:
-		return "beta"
-	case FeatureStateStable:
-		return "stable"
-	case FeatureStateDeprecated:
-		return "deprecated"
-	case FeatureStateUnknown:
-	}
-	return "unknown"
-}
-
-// MarshalJSON marshals the enum as a quoted json string
-func (s FeatureToggleState) MarshalJSON() ([]byte, error) {
-	buffer := bytes.NewBufferString(`"`)
-	buffer.WriteString(s.String())
-	buffer.WriteString(`"`)
-	return buffer.Bytes(), nil
-}
-
-// UnmarshalJSON unmarshals a quoted json string to the enum value
-func (s *FeatureToggleState) UnmarshalJSON(b []byte) error {
-	var j string
-	err := json.Unmarshal(b, &j)
-	if err != nil {
-		return err
-	}
-
-	switch j {
-	case "alpha":
-		*s = FeatureStateAlpha
-
-	case "beta":
-		*s = FeatureStateBeta
-
-	case "stable":
-		*s = FeatureStateStable
-
-	case "deprecated":
-		*s = FeatureStateDeprecated
-
-	default:
-		*s = FeatureStateUnknown
-	}
-	return nil
-}
-
-type FeatureFlag struct {
-	Name        string             `json:"name" yaml:"name"` // Unique name
-	Description string             `json:"description"`
-	State       FeatureToggleState `json:"state,omitempty"`
-	DocsURL     string             `json:"docsURL,omitempty"`
-
-	// CEL-GO expression.  Using the value "true" will mean this is on by default
-	Expression string `json:"expression,omitempty"`
-
-	// Special behavior flags
-	RequiresDevMode bool `json:"requiresDevMode,omitempty"` // can not be enabled in production
-	RequiresRestart bool `json:"requiresRestart,omitempty"` // The server must be initialized with the value
-	RequiresLicense bool `json:"requiresLicense,omitempty"` // Must be enabled in the license
-	FrontendOnly    bool `json:"frontend,omitempty"`        // change is only seen in the frontend
-
-	// Internal properties
-	// expr string `json:-`
-}