Revert "Fix package name when refreshing binstubs (#4205)"

[gspencergoog]

This reverts commit ed20b45 (#4205) because it is causing the Flutter build to fail with concurrency issues. See flutter/flutter#147609

@sigurdm

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[jakemac53]

LGTM since this is a high priority revert.

@jonasfj @sigurdm should take a closer look when they have a chance

[jonasfj]

@sigurdm we didn't cherry pick this, right?

[sigurdm]

Yeah it is trying to fix something that landed after 3.4.0-beta.