Remove legacy workflows

Signed-off-by: Tommy <contact@tommytran.io>

ISSUE_TEMPLATE.md

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-**Note: for support questions, please use the [Discord](https://revenact.io/discord)**. This repository's issues are reserved for feature requests and bug reports.
-
-* **I'm submitting a ...**
-  - [ ] Bug Report
-  - [ ] Feature Request
-  - [ ] Support Request => Please do not submit support request here, see note at the top of this template.
-
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-* **Do you want to request a *feature* or report a *bug*?**
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-* **[Pastebin](https://pastebin.com) link of the error**
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-* **What is the expected behavior?**
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-* **What is the motivation / use case for changing the behavior?**
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-* **Please tell us about your environment:**
-
-```
-  - Version: vX.X.X
-  - OS: [all | Ubuntu XX.XX | Debian XX | CentOS XX | Fedora XX | RedHat XX ]
-  - Install Options: [1-22 | Apache, Nginx | Theme ]
-```
-
-* **Other information** (e.g. detailed explanation, related issues, suggestions how to fix, links for us to have context, eg. stackoverflow, gitter, etc)

PULL_REQUEST_TEMPLATE.md

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-* **Please check if the PR fulfills these requirements**
-- [ ] The commit message follows our [guidelines](https://github.com/Revenact/Pterodactyl-Script/blob/master/CONTRIBUTING.md) 
-- [ ] Tests have been made. 
-- [ ] [Readme](https://github.com/Revenact/Pterodactyl-Script/blob/master/README.md) have been updated (for bug fixes / features)
-- [ ] [Changelog](https://github.com/Revenact/Pterodactyl-Script/blob/master/CHANGELOG.md) has be updated, and a version made
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-* **What kind of change does this PR introduce?** (Bug fix, feature, OS support, ...)
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-* **What is the current behavior?** (You can also link to an open issue here)
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-* **What is the new behavior (if this is a feature change)?**
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-* **Does this PR introduce a breaking change?** (What changes might users need to make in their application due to this PR?)
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-* **Other information**: