DOC: Added plt.show() at the end of each necessary block (pandas-dev#45772)

Reworded and moved title to the top of the page

Author: ehallam

doc/source/getting_started/intro_tutorials/04_plotting.rst

@@ -195,13 +195,6 @@ I want to further customize, extend or save the resulting plot.
        ...: fig.savefig("no2_concentrations.png")
        ...: plt.show()
 
-.. ipython:: python
-   :suppress:
-
-   import os
-
-   os.remove("no2_concentrations.png")
-
 .. raw:: html
 
         </li>