Companion for substrate/pull/6334 (#1263)
* fix all runtimes and add test'
* Fix build
* Undo changes to lock file?
* Fix runtime test
* Remove unused imports
* cargo update -p sp-io
* Update Cargo.lock
* bump spec version
Co-authored-by:
Shawn Tabrizi <shawntabrizi@gmail.com>
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