all: remove redundant type conversion

[cuishuang]

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This PR (HEAD: 43904f8dd8f08028af8870fb8de4c1662594887e) has been imported to Gerrit for code review.

Please visit https://go-review.googlesource.com/c/arch/+/428983 to see it.

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Message from Cherry Mui:

Patch Set 1: Run-TryBot+1

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Please don’t reply on this GitHub thread. Visit golang.org/cl/428983. After addressing review feedback, remember to publish your drafts!

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Message from Gopher Robot:

Patch Set 1:

(1 comment)

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Message from Gopher Robot:

Patch Set 1: TryBot-Result+1

(1 comment)

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Message from Cherry Mui:

Patch Set 1: Code-Review+2

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Message from Michael Knyszek:

Patch Set 1: Code-Review+1

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Message from shuang cui:

Patch Set 1:

(1 comment)

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[gopherbot]

This PR is being closed because golang.org/cl/428983 has been merged.