Remove unused slidingSyncProxy from DB.

features/login/impl/src/main/kotlin/io/element/android/features/login/impl/screens/createaccount/MessageParser.kt

@@ -39,7 +39,6 @@ class DefaultMessageParser(
             accessToken = accessToken,
             deviceId = deviceId,
             refreshToken = null,
-            slidingSyncProxy = null
         )
     }
 }

features/login/impl/src/test/kotlin/io/element/android/features/login/impl/screens/createaccount/DefaultMessageParserTest.kt

@@ -84,5 +84,4 @@ internal fun anExternalSession(
     accessToken = "access_token",
     deviceId = "device_id",
     refreshToken = null,
-    slidingSyncProxy = null
 )

features/signedout/impl/src/main/kotlin/io/element/android/features/signedout/impl/SignedOutStateProvider.kt

@@ -37,7 +37,6 @@ private fun aSessionData(
         refreshToken = "aRefreshToken",
         homeserverUrl = "aHomeserverUrl",
         oidcData = null,
-        slidingSyncProxy = null,
         loginTimestamp = null,
         isTokenValid = isTokenValid,
         loginType = LoginType.UNKNOWN,