refactor: Remove unneeded NotImplementedException

src/Recyclarr.Cli/Migration/RequiredMigrationException.cs

@@ -5,6 +5,5 @@ public class RequiredMigrationException : Exception
     public RequiredMigrationException()
         : base("Some REQUIRED migrations did not pass")
     {
-        throw new NotImplementedException();
     }
 }

src/Recyclarr.Cli/Pipelines/ReleaseProfile/TermDataConverter.cs

@@ -7,6 +7,7 @@ internal class TermDataConverter : JsonConverter
 {
     public override void WriteJson(JsonWriter writer, object? value, JsonSerializer serializer)
     {
+        // Not to be used for serialization
         throw new NotImplementedException();
     }