Remove Fedora and CentOS packages for kompose

[Mab879]

Description

Remove the Fedora and CentOS (i.e. epel) install section from kompose as the package have been orphaned for over 2 years.
See this commit for more details.

Issue

The docs pointed users to install non-existing packages.

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• ✅login: Mab879 / (52bd40a)

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