Remove undocumented parameter

https://github.com/matrix-org/sydent/issues/195

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/identity/IdentityRequestTokenForBindingTask.kt

@@ -16,7 +16,6 @@
 
 package im.vector.matrix.android.internal.session.identity
 
-import im.vector.matrix.android.api.session.identity.IdentityServiceError
 import im.vector.matrix.android.api.session.identity.ThreePid
 import im.vector.matrix.android.api.session.identity.getCountryCode
 import im.vector.matrix.android.internal.di.UserId
@@ -64,10 +63,6 @@ internal class DefaultIdentityRequestTokenForBindingTask @Inject constructor(
             }
         }
 
-        if (!tokenResponse.success) {
-            throw IdentityServiceError.BindingError
-        }
-
         // Store client secret and sid
         identityServiceStore.storePendingBinding(
                 params.threePid,

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/identity/model/IdentityRequestTokenResponse.kt

@@ -27,11 +27,5 @@ internal data class IdentityRequestTokenResponse(
          * Their length must not exceed 255 characters and they must not be empty.
          */
         @Json(name = "sid")
-        val sid: String,
-
-        /**
-         * Not documented
-         */
-        @Json(name = "success")
-        val success: Boolean
+        val sid: String
 )