diff --git a/src/Core/Constants.cs b/src/Core/Constants.cs
index 6e0bc556d..a95d0290c 100644
--- a/src/Core/Constants.cs
+++ b/src/Core/Constants.cs
@@ -102,11 +102,6 @@ public static class AuthenticationSchemes
 
 public static class FeatureFlagKeys
 {
-    public const string DisplayEuEnvironment = "display-eu-environment";
-    public const string DisplayLowKdfIterationWarning = "display-kdf-iteration-warning";
-    public const string PasswordlessLogin = "passwordless-login";
-    public const string TrustedDeviceEncryption = "trusted-device-encryption";
-    public const string Fido2VaultCredentials = "fido2-vault-credentials";
     public const string VaultOnboarding = "vault-onboarding";
     public const string BrowserFilelessImport = "browser-fileless-import";
     public const string ReturnErrorOnExistingKeypair = "return-error-on-existing-keypair";
@@ -155,8 +150,6 @@ public static class FeatureFlagKeys
         // place overriding values when needed locally (offline), or return null
         return new Dictionary<string, string>()
         {
-            { TrustedDeviceEncryption, "true" },
-            { Fido2VaultCredentials, "true" },
             { DuoRedirect, "true" },
             { UnassignedItemsBanner, "true"},
             { FlexibleCollectionsSignup, "true" }