deps: remove thread_local to fix V8 compilation

[psmarshall]

Checklist

• make -j4 test (UNIX), or vcbuild test (Windows) passes
• commit message follows commit guidelines

This should fix compilation on macOS 10.10, addressing these issues:
nodejs/build#1415
Fixes: nodejs/build#1426

[targos]

Thanks. Maybe we should do that only in the backport PR?
That will be easier to test as well. Tests run on macOS 10.11 for master

[psmarshall]

Yes, fine by me, I just didn't know which branch to target it to. Could you target the PR to the right place? I'm not able to change it 👍

[psmarshall]

Oh wait I figured out how to change the target branch. I'm not sure how to set this up. We want this to land with the V8 6.8 backport onto 10.x-staging - but I can't target this to 10.x-staging until v8 6.8 is in there (otherwise the patch makes no sense..).

[targos]

My suggestion was to add this change to the 6.8 backport PR

[mhdawson]

Assuming the V8 team are confident this does not have a negative impact. LTGM as it allows V8 6.8 to compile with OSX 1010 and provides an easier path for V8 6.8 landing in the 10.x line.

[psmarshall]

This was picked into #21668, closing.