Removed redundant lines from get_started.ipynb

[ManishAradwad]

Fixes : #3451
@lamberta Can you plz review this PR.

[review-notebook-app]

Check out this pull request on 

You'll be able to see Jupyter notebook diff and discuss changes. Powered by ReviewNB.

[wchargin]

Thanks for the pull request!

There are a lot of extraneous changes in the output here due to
re-running the whole notebook. Only 5–10 lines actually need to be
changed, but this diff touches 526 lines, which makes it hard to see
what the patch actually does. Could you please revert those extraneous
changes? The GitHub diff viewer should be able to comfortably show the
change rather than complaining that the diff is too large.

Also, it looks like there are more uses of %tensorflow_version 2.x in
the rest of the docs:

$ git grep '%tensorflow_version 2'
docs/graphs.ipynb:        "  %tensorflow_version 2.x\n",
docs/hyperparameter_tuning_with_hparams.ipynb:        "  %tensorflow_version 2.x\n",
docs/image_summaries.ipynb:        "  %tensorflow_version 2.x\n",
docs/migrate.ipynb:        "  %tensorflow_version 2.x\n",
docs/migrate.ipynb:        "  %tensorflow_version 2.x\n",
docs/scalars_and_keras.ipynb:        "  %tensorflow_version 2.x\n",
docs/tbdev_getting_started.ipynb:        "  %tensorflow_version 2.x\n",
docs/tensorboard_in_notebooks.ipynb:        "  %tensorflow_version 2.x\n",

It’d be best to fix all of them in the same PR. Can you update this
patch to include changes to those files, too?

[lamberta]

Hi @ManishAradwad , to make the diffs easier to read, you can try running the notebook through nbfmt.py or downloading from Colab.

[wchargin]

@lamberta: Thanks for the pointer to nbfmt.py (and thanks, apparently,
for writing it!). That looks like it would make things a bunch easier
for us. I’ll send a PR to reformat our docs and add that to CI.

[lamberta]

@wchargin Cool, let me know how it goes. Now looking at ways to integrate it into the GitHub CI to reduce friction for tensorflow/docs PRs

[wchargin]

Opened #3455, which does integrate into GitHub Actions. It’s pretty
painless (totally sufficient for me), though it would be even painlesser
if you made a GitHub Action that we could just depend on instead of
having to wget the file and pip install absl-py ourselves. :-)

[wchargin]

@ManishAradwad: I’ve merged #3455; please feel free to update this PR
(after rebasing on master) at your convenience.

[ManishAradwad]

@wchargin Thanks for the review. I'm unable to resolve the conflicts of this branch with the master branch(apparently the nb is not opening in vscode). I think to avoid any complexity, it would be better if I close this PR and open another one. I'll send one soon.
Thanks!

[ManishAradwad]

@wchargin I've created another PR at #3459
Plz review it