remove the billing enum type stuff because the enum maps to a diff value than the key, GQL doesnt like that

Author: ajay-sentry

graphql_api/types/enums/enum_types.py

@@ -1,5 +1,5 @@
 from ariadne import EnumType
-from shared.plan.constants import PlanBillingRate, TierName, TrialStatus
+from shared.plan.constants import TierName, TrialStatus
 
 from codecov_auth.models import RepositoryToken
 from compare.commands.compare.interactors.fetch_impacted_files import (
@@ -51,7 +51,6 @@
     EnumType("SyncProvider", SyncProvider),
     EnumType("TierName", TierName),
     EnumType("TrialStatus", TrialStatus),
-    EnumType("PlanBillingRate", PlanBillingRate),
     EnumType("YamlStates", YamlStates),
     EnumType("BundleLoadTypes", BundleLoadTypes),
     EnumType("TestResultsOrderingParameter", TestResultsOrderingParameter),

graphql_api/types/enums/plan_billing_rate.graphql

@@ -1,7 +1,7 @@
 type Plan {
   baseUnitPrice: Int!
   benefits: [String!]!
-  billingRate: PlanBillingRate!
+  billingRate: String
   hasSeatsLeft: Boolean!
   isEnterprisePlan: Boolean!
   isFreePlan: Boolean!