remove action to manage plugin that is not used or documented (#49309)

pkg/api/index.go

@@ -632,7 +632,7 @@ func (hs *HTTPServer) buildAdminNavLinks(c *models.ReqContext) []*dtos.NavLink {
 		})
 	}
 
-	if hs.Cfg.PluginAdminEnabled && hasAccess(ac.ReqGrafanaAdmin, ac.EvalPermission(ac.ActionPluginsManage)) {
+	if hs.Cfg.PluginAdminEnabled && ac.ReqGrafanaAdmin(c) {
 		adminNavLinks = append(adminNavLinks, &dtos.NavLink{
 			Text: "Plugins", Id: "admin-plugins", Url: hs.Cfg.AppSubURL + "/admin/plugins", Icon: "plug",
 		})

pkg/services/accesscontrol/models.go

@@ -327,9 +327,6 @@ const (
 	// Datasources actions
 	ActionDatasourcesExplore = "datasources:explore"
 
-	// Plugin actions
-	ActionPluginsManage = "plugins:manage"
-
 	// Global Scopes
 	ScopeGlobalUsersAll = "global.users:*"