remove "id" from keytrial: unneeded

Author: bitfl0wer

api/src/core/main.tsp

@@ -67,11 +67,6 @@ namespace models {
         @doc("The key trial, which the client should sign with their private identity key.")
         trial: string;
 
-        @minLength(1)
-        @maxLength(256)
-        @doc("A unique identifying string to differentiate this specific key trial from other key trials that may be open at the same time.")
-        id: string;
-
         @doc("The UNIX timestamp after which the key trial expires.")
         expires: uint64;
     }
@@ -83,9 +78,6 @@ namespace models {
         @doc("The signature produced by signing the key trial string using a private identity key.")
         signature: string;
 
-        @doc("The unique identifying string, differentiating this specific key trial from other key trials that may be open at the same time.")
-        id: string;
-
         @doc("The serial number of the ID-Cert corresponding to the private identity key used to sign the key trial string.")
         serial_number: uint64;
     }