Removed spam examples

[axsaucedo]

Fixes #1938

Removing spam classifier examples as there has been multiple bugs reported, we'll be looking to add new examples to document combiners/transformers better instead.

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[seldondev]

Thu Jul 9 07:35:07 UTC 2020
The logs for [lint] [2] will show after the pipeline context has finished.
https://github.com/SeldonIO/seldon-core/blob/gh-pages/jenkins-x/logs/SeldonIO/seldon-core/PR-2096/2.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-2096 --build=2

[seldondev]

Thu Jul 9 07:35:24 UTC 2020
The logs for [pr-build] [1] will show after the pipeline context has finished.
https://github.com/SeldonIO/seldon-core/blob/gh-pages/jenkins-x/logs/SeldonIO/seldon-core/PR-2096/1.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-2096 --build=1

[seldondev]

Thu Jul 9 07:41:55 UTC 2020
The logs for [pr-build] [3] will show after the pipeline context has finished.
https://github.com/SeldonIO/seldon-core/blob/gh-pages/jenkins-x/logs/SeldonIO/seldon-core/PR-2096/3.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-2096 --build=3

[seldondev]

Thu Jul 9 07:42:07 UTC 2020
The logs for [lint] [4] will show after the pipeline context has finished.
https://github.com/SeldonIO/seldon-core/blob/gh-pages/jenkins-x/logs/SeldonIO/seldon-core/PR-2096/4.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-2096 --build=4

[ukclivecox]

/approve

[seldondev]

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