remove Bundler::DepProxy tweaks

[jsvd]

since ruby/rubygems#5698 Bundler no longer has a DepProxy class, so we can remove the tweaks for it.

This fixes Logstash crash since bump to Bundler 2.4:

> Task :generatePluginsVersion FAILED

FAILURE: Build failed with an exception.

* Where:
Script '/Users/joaoduarte/elastic/logstash/rubyUtils.gradle' line: 143

* What went wrong:
Execution failed for task ':generatePluginsVersion'.
> (null) uninitialized constant Bundler::DepProxy

To test, run ./gradlew generatePluginsVersion

[mashhurs]

Removing this sounds it consumes alot memory now. Do we need to find alternative solution or need to scale up the machine we are running on?

[roaksoax]

@mashhurs I think it is ok. As per @jsvd description on the PR:

since https://github.com/rubygems/rubygems/pull/5698 Bundler no longer has a DepProxy class, so we can remove the tweaks for it.

Then it sounds like this no longer exists, and not needed.

[roaksoax]

lgtm!

[roaksoax]

@mashhurs I think it is ok. As per @jsvd description on the PR:

since https://github.com/rubygems/rubygems/pull/5698 Bundler no longer has a DepProxy class, so we can remove the tweaks for it.

Then it sounds like this no longer exists, and not needed.

[mashhurs]

LGTM!

[jsvd]

Actually let's hold off on merging this. After double checking, Bundler 2.4 is accumulating object somewhere too and generatePluginsVersion won't complete on just 4gb of heap.

[roaksoax]

@andsel can you look into this?

[mergify]

This pull request does not have a backport label. Could you fix it @jsvd? 🙏
To fixup this pull request, you need to add the backport labels for the needed
branches, such as:

• backport-8./d is the label to automatically backport to the 8./d branch. /d is the digit.
• backport-8.x is the label to automatically backport to the 8.x branch.

[mergify]

backport-8.x has been added to help with the transition to the new branch 8.x.
If you don't need it please use backport-skip label.

[jsvd]

This was solved in fe1b1ed