Ignore annotation-only assignment statements in redundant-assignment check

[david-yz-liu]

Proposed Changes

(Describe your changes here. Also describe the motivation for your changes: what problem do they solve, or how do they improve the application or codebase? If this pull request fixes an open issue, use a keyword to link this pull request to the issue.)

Currently the redundant-assignment check flags annotation-only assignment statements, e.g. x : int. These should be ignored by the check.

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Type of Change

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Type	Applies?
🚨 Breaking change (fix or feature that would cause existing functionality to change)
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[coveralls]

Pull Request Test Coverage Report for Build 12801866556

Details

• 4 of 4 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.005%) to 92.514%

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Totals
Change from base Build 12740304493:	0.005%
Covered Lines:	3213
Relevant Lines:	3473

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💛 - Coveralls