Update the locust Reporting example

[eliflores]

To change the conditions used in the example, format imports, and remove an unused variable. Additionally:

• Fixed some typos and linting issues.
• Mentioned that using test data in locust load tests with Kangal is not supported.

[codecov-commenter]

Codecov Report

Merging #251 (3d8ce70) into master (bad91bb) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #251   +/-   ##
=======================================
  Coverage   56.21%   56.21%           
=======================================
  Files          37       37           
  Lines        4116     4116           
=======================================
  Hits         2314     2314           
  Misses       1679     1679           
  Partials      123      123           

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