delete old file
Created by: IgnacioHeredia
Delete old markdown of the module because it clashes with the new builded markdown because they have the same Title
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Error message: https://jenkins.indigo-datacloud.eu/job/Pipeline-as-code/job/deephdc.github.io/job/pelican/18/execution/node/274/log/
Stackoverflow issue: https://stackoverflow.com/questions/30690831/getting-error-while-trying-to-make-a-new-post-in-pelican