Remove shebangs from notebooks

flash_tutorials/image_classification/image_classification.py

@@ -1,5 +1,3 @@
-#!/usr/bin/env python
-
 # %% [markdown]
 # In this tutorial, we'll go over the basics of lightning Flash by finetuning/predictin with an ImageClassifier on [Hymenoptera Dataset](https://www.kaggle.com/ajayrana/hymenoptera-data) containing ants and bees images.
 #

flash_tutorials/tabular_classification/tabular_classification.py

@@ -1,5 +1,3 @@
-#!/usr/bin/env python
-
 # %% [markdown]
 # In this notebook, we'll go over the basics of lightning Flash by training a TabularClassifier on [Titanic Dataset](https://www.kaggle.com/c/titanic).
 

flash_tutorials/text_classification/text_classification.py

@@ -1,5 +1,3 @@
-#!/usr/bin/env python
-
 # %% [markdown]
 # In this notebook, we'll go over the basics of lightning Flash by finetunig a TextClassifier on [IMDB Dataset](https://www.imdb.com/interfaces/).
 #