Remove prebuild from package.json files

[xirzec]

Rush doesn't actually run/support prebuild when doing rush build / rush rebuild:

microsoft/rushstack#830

Which means that if we make certain kinds of changes in the tree, we'll get build errors after pulling the latest main. The fix for this is to update our build tasks to do cleaning rather than relying on prebuild to call it for us.

[ramya-rao-a]

@sadasant Assigning this to you as you are already covering this in #17123

[ramya-rao-a]

@sadasant A lot of the packages updated in #17123 are autogenerated. We should skip making changes to them manually. Instead, the changes should be done in the code generator and the package should be updated whenever the package owner decides to make ship the next update.

Can you please log an issue in the https://github.com/Azure/autorest.typescript repo so that these changes dont get reverted the next time these packages are updated?

[sadasant]

For sure! on it!

[sadasant]

@ramya-rao-a I could be wrong but I think we can close this now :)