remove beta for featureUtility no proxy

[jjiwooLim]

• I have considered the risk of behavior change or other zero migration impact (https://github.com/OpenLiberty/open-liberty/wiki/Behavior-Changes).
• If this PR fixes an Issue, the description includes "Fixes #FILLMEIN" or "Resolves #FILLMEIN" (verify release bug label if applicable: https://github.com/OpenLiberty/open-liberty/wiki/Open-Liberty-Conventions).
• If this PR resolves an external Known Issue (including APARS), the description includes "Fixes #FILLMEIN" or "Resolves #FILLMEIN".

[jjiwooLim]

#build

[LibbyBot]

Your personal pipeline request is at https://libh-proxy1.fyre.ibm.com/cognitive/pipelineAnalysis.html?uuid=3fbf544f-5bd1-45bd-93c5-f62f74b07742

Target locations of links might be accessible only to IBM employees.

[LibbyBot]

Your personal build request is at https://wasrtc.hursley.ibm.com:9443/jazz/resource/itemOid/com.ibm.team.build.BuildResult/_LTFKIHXaEe-ZBdXWdK7Miw

Target locations of links might be accessible only to IBM employees.

[LibbyBot]

https://libh-proxy1.fyre.ibm.com/cognitive/pipelineAnalysis.html?uuid=3fbf544f-5bd1-45bd-93c5-f62f74b07742 has errors/failures.

[LibbyBot]

The build jjiwooLim-29679-20240918-1031
https://wasrtc.hursley.ibm.com:9443/jazz/resource/itemOid/com.ibm.team.build.BuildResult/_LTFKIHXaEe-ZBdXWdK7Miw
completed and has errors or failures.

For help analyzing your personal build, go to https://libh-proxy1.fyre.ibm.com/cognitive/buildAnalysis.html?uuid=_LTFKIHXaEe-ZBdXWdK7Miw

[jjiwooLim]

Test result looks good.

[jjiwooLim]

#libby-bot

[LibbyBot]

Code analysis and actions

DO NOT DELETE THIS COMMENT.

• 3 product code files were changed.
• Please describe in a separate comment how you tested your changes.