change: remove the settings ui

ownCloud Web recently transitioned to Vue3. The settings ui is still
written in Vue2. Since it's pretty much unused we won't take the efforts
of upgrading it to Vue3.

services/proxy/pkg/config/defaults/defaultconfig.go

@@ -193,11 +193,6 @@ func DefaultPolicies() []config.Policy {
 					Endpoint: "/api/v0/settings",
 					Service:  "com.owncloud.web.settings",
 				},
-				{
-					Endpoint:    "/settings.js",
-					Service:     "com.owncloud.web.settings",
-					Unprotected: true,
-				},
 			},
 		},
 	}