Delete wiki pages that were ported to InnerSourcePatterns

[spier]

As part of https://github.com/InnerSourceCommons/InnerSourcePatterns/pull/134 I ported a couple of patterns from this wiki innersourcecommons.org/wiki over to the InnerSourcePatterns repo.

To reduce duplicate content and create a single source of truth of ISC Patterns in the InnerSourcePatterns, it would be great if somebody with access permissions could delete the following wiki pages:

• [x] wiki/Overcome-Acquisition-based-Silos => ported to overcome-acquisition-based-silos-developer.md and overcome-acquisition-based-silos-manager.md
• [x] wiki/Pattern:-change-the-developers-mindset => ported to change-the-developers-mindset.md
• [x] wiki/Donut:-Creating-Developer-Incentive-Alignment-for-InnerSource-Contribution => ported to developer-incentive-alignment-for-innersource-contribution.md
• [x] wiki/Pattern:-Share-Your-Code-to-Get-More-Done---Likely-Contributors-Variant => ported to share-your-code-to-get-more-done.md
• [x] wiki/Shared-Code-Repo-Different-from-Build-Repo => ported to shared-code-repo-different-from-build-repo.md
• [x] wiki/Donut:-Bad-weather-for-liftoff => ported to bad-weather-for-liftoff.md
• [x] wiki/Donut-3%3A-how-to-defeat-the-hierarchical-constraints => ported to defeat-hierarchical-constraints.md
• [x] wiki/Donut-6:-organizational-mindset-change => ported to organizational-mindset-change.md

[lenucksi]

Deleted the mentioned pages and checked off the check-boxes here. Please creat another issue if more pages have been ported and need deletion in the wiki.