fix: remove keychain hack

Latest version of Taurine does not care about this anymore.

Author: ViRb3

sign.py

@@ -913,10 +913,6 @@ def __prepare_primary(
                     self.removed_entitlements.add(entitlement)
                     entitlements.pop(entitlement)
 
-            # Taurine jailbreak demands this entitlement, even if blank
-            if "keychain-access-groups" not in entitlements:
-                entitlements["keychain-access-groups"] = []
-
             # some apps define iCloud properties but without identifiers
             # this is pointless, but it also causes modern Xcode to fail - remove them
             if not any(