[prone] remove disable warning leftovers to finalize convention principle

[Pankraz76]

enabler for:

• [prone] fix UnnecessarilyFullyQualified #5189

realted to:

• [picnic] add NonStaticImport gradle/gradle#35878

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Definition of Done

• There are no TODOs left in the code
• Method preconditions are checked and documented in the method's Javadoc
• Coding conventions (e.g. for logging) have been followed
• Change is covered by automated tests including corner cases, errors, and exception handling
• Public API has Javadoc and @API annotations
• Change is documented in the User Guide and Release Notes

[Pankraz76]

no need to consider these, might nice to have, idk.

[Pankraz76]

kindly asking, if this is some principle cleanup, worth to consider?

[Pankraz76]

reopen if dedicated merge desired, assuming its done in:

#5191