Remove TypeScript build artifacts

[SolarFlurry]

Remove behavior_pack/scripts directory.

Reasons for change

• There is already behavior_pack/src which is the source of truth, there should not be two
• removes the need of transpiling the TypeScript code into JS for committing
• the directory is considered a build artifact of TypeScript transpilation
• lowers the storage footprint needed to store the repository

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[BrodBlox09]

The argument for keeping behavior_pack/scripts is so that less-technical users are able to download the packs directly from GitHub and run it in Minecraft straight away. I 100% agree with you in every way that it would be better to have one source of truth for the code in this project, but we are currently attempting to accommodate to less-technical users.