HADOOP-16223. Remove misleading fs.s3a.delegation.tokens.enabled prompt

[ahmarsuhail]

Jira: https://issues.apache.org/jira/browse/HADOOP-16223

Description of PR

This PR removes fs.s3a.delegation.tokens.enabled option from core-default.xml as this option is not used.

How was this patch tested?

Tested in eu-west-1 with mvn -Dparallel-tests -DtestsThreadCount=16 clean verify

[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	1m 5s		Docker mode activated.
			_ Prechecks _
+1 💚	dupname	0m 0s		No case conflicting files found.
+0 🆗	codespell	0m 0s		codespell was not available.
+1 💚	@author	0m 0s		The patch does not contain any @author tags.
-1 ❌	test4tests	0m 0s		The patch doesn't appear to include any new or modified tests. Please justify why no new tests are needed for this patch. Also please list what manual steps were performed to verify this patch.
			_ trunk Compile Tests _
-1 ❌	mvninstall	33m 2s	/branch-mvninstall-root.txt	root in trunk failed.
+1 💚	compile	26m 55s		trunk passed with JDK Ubuntu-11.0.13+8-Ubuntu-0ubuntu1.20.04
+1 💚	compile	21m 23s		trunk passed with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07
+1 💚	mvnsite	1m 40s		trunk passed
+1 💚	javadoc	1m 9s		trunk passed with JDK Ubuntu-11.0.13+8-Ubuntu-0ubuntu1.20.04
+1 💚	javadoc	1m 36s		trunk passed with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07
+1 💚	shadedclient	109m 20s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+1 💚	mvninstall	1m 1s		the patch passed
+1 💚	compile	24m 40s		the patch passed with JDK Ubuntu-11.0.13+8-Ubuntu-0ubuntu1.20.04
+1 💚	javac	24m 40s		the patch passed
+1 💚	compile	20m 53s		the patch passed with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07
+1 💚	javac	20m 53s		the patch passed
+1 💚	blanks	0m 0s		The patch has no blanks issues.
+1 💚	mvnsite	1m 35s		the patch passed
+1 💚	xml	0m 1s		The patch has no ill-formed XML file.
+1 💚	javadoc	1m 8s		the patch passed with JDK Ubuntu-11.0.13+8-Ubuntu-0ubuntu1.20.04
+1 💚	javadoc	1m 38s		the patch passed with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07
+1 💚	shadedclient	27m 16s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
+1 💚	unit	17m 59s		hadoop-common in the patch passed.
+1 💚	asflicense	0m 50s		The patch does not generate ASF License warnings.
		206m 46s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3879/1/artifact/out/Dockerfile
GITHUB PR	#3879
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient codespell xml
uname	Linux be90aec173aa 4.15.0-163-generic #171-Ubuntu SMP Fri Nov 5 11:55:11 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	trunk / 62d601e
Default Java	Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07
Multi-JDK versions	/usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.13+8-Ubuntu-0ubuntu1.20.04 /usr/lib/jvm/java-8-openjdk-amd64:Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07
Test Results	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3879/1/testReport/
Max. process+thread count	3135 (vs. ulimit of 5500)
modules	C: hadoop-common-project/hadoop-common U: hadoop-common-project/hadoop-common
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3879/1/console
versions	git=2.25.1 maven=3.6.3
Powered by	Apache Yetus 0.14.0-SNAPSHOT https://yetus.apache.org

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[steveloughran]

LGTM

+1

[steveloughran]

thanks!
merged in. before i close the JIRA, what is your username there so I can give you the credit?

[ahmarsuhail]

My user name is ahmarsu