remove install custom az cli version from e2e

[OliverMKing]

Description

We no longer need to overwrite the az cli version installed onto the runner. Azure cli 2.60 was baked into runners last week which contains the needed fix.

Azure/login#372 (comment)

[coveralls]

Pull Request Test Coverage Report for Build 9228797603

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 80.503%

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Totals
Change from base Build 9129232516:	0.0%
Covered Lines:	2911
Relevant Lines:	3616

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💛 - Coveralls