Revert "Add security context to seldon-controller-manager deployment"

[ukclivecox]

Reverts #2709

[seldondev]

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[seldondev]

Mon Dec 7 15:36:06 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-2752/2.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-2752 --build=2

[seldondev]

Mon Dec 7 15:36:10 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-2752/1.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-2752 --build=1