STYLE: Remove virtual keyword from member functions marked override

[N-Dekker]

Following C++ Core Guidelines, Virtual functions should specify exactly one of virtual, override, or final

Using Notepad++, Replace in Files, doing:

Find what: virtual (.*[\r\n]*.*override)
Replace with: \1
[v] Match case
(*) Regular expression

[dzenanz]

Ah, virtual and override on different lines, so previous searches missed them.

[greptile-apps]

Greptile Summary

• Removes redundant virtual specifiers from declarations already marked override.
• Keeps the existing public interfaces and dispatch behavior unchanged.

No new actionable issues were identified.

Confidence Score: 5/5

Safe to merge.

There are no outstanding severity-bearing findings.

_{Reviews (2): Last reviewed commit: "STYLE: Remove `virtual` keyword from mem..." | Re-trigger Greptile}

[N-Dekker]

• Remove the leading virtual keyword from the three residual declarations, leaving override as their sole virtual-function specifier.

Thanks @greptile-apps! Addressed by this force-pushed amend

[greptile-apps]

Addressed in the force-pushed amend. The residual virtual specifiers were removed while retaining override in itkCellInterface.h, itkEventObject.h, and itkLandmarkRegistrationEstimator.h.