[SN-72] [SN-70] Updates to project notebook and delete labels notebook (#1200)

1. Removed labels notebook, since almost all of the relevant methods in the notebook were not compatible with workflow paradigm. 
2. Updated project.ipynb to use batches not datasets

Author: ovalle15

examples/README.md

@@ -15,7 +15,6 @@
 | Data Row Metadata | [Github](basics/data_row_metadata.ipynb) | [![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/Labelbox/labelbox-python/blob/master/examples/basics/data_row_metadata.ipynb) |
 | Datasets          | [Github](basics/datasets.ipynb)          | [![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/Labelbox/labelbox-python/blob/master/examples/basics/datasets.ipynb)          |
 | Export data       | [Github](basics/export_data.ipynb)       | [![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/Labelbox/labelbox-python/blob/master/examples/basics/export_data.ipynb)       |
-| Labels            | [Github](basics/labels.ipynb)            | [![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/Labelbox/labelbox-python/blob/master/examples/basics/labels.ipynb)            |
 | Ontologies        | [Github](basics/ontologies.ipynb)        | [![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/Labelbox/labelbox-python/blob/master/examples/basics/ontologies.ipynb)        |
 | Projects          | [Github](basics/projects.ipynb)          | [![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/Labelbox/labelbox-python/blob/master/examples/basics/projects.ipynb)          |
 | User Management   | [Github](basics/user_management.ipynb)   | [![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/Labelbox/labelbox-python/blob/master/examples/basics/user_management.ipynb)   |