[x9.x backport] src: remove unused using declarations async_wrap

[danbev]

PR-URL: #18893
Reviewed-By: Michaël Zasso targos@protonmail.com
Reviewed-By: Minwoo Jung minwoo@nodesource.com
Reviewed-By: Yuta Hiroto hello@about-hiroppy.com
Reviewed-By: Colin Ihrig cjihrig@gmail.com
Reviewed-By: Ruben Bridgewater ruben@bridgewater.de
Reviewed-By: Gibson Fahnestock gibfahn@gmail.com

Checklist

• make -j4 test (UNIX), or vcbuild test (Windows) passes
• commit message follows commit guidelines

[danbev]

CI: https://ci.nodejs.org/job/node-test-pull-request/13602/

[danbev]

node-test-commit failure looks unrelated

console output:

FATAL: java.io.IOException: Unexpected EOF while receiving the data from the channel. FIFO buffer has been already closed
org.jenkinsci.remoting.nio.FifoBuffer$CloseCause: Buffer close has been requested
	at org.jenkinsci.remoting.nio.FifoBuffer.close(FifoBuffer.java:426)
	at org.jenkinsci.remoting.nio.NioChannelHub$MonoNioTransport.closeR(NioChannelHub.java:338)
	at org.jenkinsci.remoting.nio.NioChannelHub.run(NioChannelHub.java:571)
Caused: java.io.IOException: Unexpected EOF while receiving the data from the channel. FIFO buffer has been already closed
	at org.jenkinsci.remoting.nio.NioChannelHub$3.run(NioChannelHub.java:629)
Also:   hudson.remoting.Channel$CallSiteStackTrace: Remote call to Channel to /72.2.114.47
		at hudson.remoting.Channel.attachCallSiteStackTrace(Channel.java:1693)
		at hudson.remoting.Request.call(Request.java:192)
		at hudson.remoting.Channel.call(Channel.java:907)
		at hudson.Launcher$RemoteLauncher.kill(Launcher.java:1079)
		at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:510)
		at hudson.model.Run.execute(Run.java:1724)
		at hudson.matrix.MatrixRun.run(MatrixRun.java:146)
		at hudson.model.ResourceController.execute(ResourceController.java:97)
		at hudson.model.Executor.run(Executor.java:429)
Caused: hudson.remoting.RequestAbortedException
	at hudson.remoting.Request.abort(Request.java:329)
	at hudson.remoting.Channel.terminate(Channel.java:992)
	at org.jenkinsci.remoting.nio.NioChannelHub$3.run(NioChannelHub.java:628)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at hudson.remoting.SingleLaneExecutorService$1.run(SingleLaneExecutorService.java:112)
	at jenkins.util.ContextResettingExecutorService$1.run(ContextResettingExecutorService.java:28)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
[Current build status] check if current [FAILURE] is worse or equals then [UNSTABLE] and better or equals then [SUCCESS]
Run condition [Current build status] preventing perform for step [[]]
ERROR: Step ?Publish TAP Results? failed: no workspace for node-test-commit-smartos/nodes=smartos14-64 #15945
Checking ^not ok
ERROR: Build step failed with exception
java.lang.NullPointerException
Build step 'Jenkins Text Finder' marked build as failure
Notifying upstream projects of job completion
Finished: FAILURE

[MylesBorins]

landed in 1ba1861