SparkSL resources

igl | Remove the old bindTexture() menthod

Summary:
Removed the overloaded member function:

```
virtual void bindTexture(size_t index, uint8_t target, const std::shared_ptr<ITexture>& texture)
```

A proper long-term fix for D47407405.

Reviewed By: MichaelTay

Differential Revision: D47408363

fbshipit-source-id: c6f80a5f4901007340a156f2568840c6763b2c7d