Remove unneeded installation of dependencies for Ubuntu wasm jobs

[mcbarton]

This part of the ci seems unneeded. Its removal will speed up the wasm Ubuntu jobs.

[mcbarton]

The job failure is due to some issue with code coverage that keeps happening. @maximusron @vgvassilev can one of you merge this PR, and look at what is the issue with the code coverage job?

[maximusron]

@mcbarton looks like the token for codecov upload timed out on that job... the workflow is successful upon rerunning

[maximusron]

lgtm!