chore: remove `composer retool`

[kenjis]

This was unintended.

[coveralls]

Pull Request Test Coverage Report for Build 9753348437

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 88.727%

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Totals
Change from base Build 9589356057:	0.0%
Covered Lines:	244
Relevant Lines:	275

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💛 - Coveralls