* remove deprecated wandb env var * remove os.environ wandb setting; unused loggers * remove os.environ wandb setting; unused loggers
Co-authored-by: Wing Lian <wing@axolotl.ai>
* [ci] make e2e tests a bit faster by reducing test split size * use 10% split of alpaca dataset to speed up dataset loading/tokenization * reduce gas 4->2 for most e2e tests * increase val set size for packing
