Remove unused isNewNativeImage parameter from NativeImage::Open

[Copilot]

Description

The isNewNativeImage out parameter in NativeImage::Open was being populated but never used by the sole caller in AssemblyBinder::LoadNativeImage.

Changes

• Removed isNewNativeImage parameter from method signature in nativeimage.h and nativeimage.cpp
• Removed three assignments to *isNewNativeImage in the implementation
• Removed unused local variable at call site in assemblybinder.cpp

Files Changed

• src/coreclr/vm/nativeimage.h
• src/coreclr/vm/nativeimage.cpp
• src/coreclr/vm/assemblybinder.cpp

cc @dotnet/appmodel @AaronRobinsonMSFT

Original prompt

The isNewNativeImage parameter to NativeImage::Open does not appear to be used. Remove it.

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[Copilot]

Pull request overview

Removes an unused isNewNativeImage out parameter from NativeImage::Open and cleans up its only call site, simplifying the native image loading path.

Changes:

• Updated NativeImage::Open declaration in nativeimage.h to drop the /* out */ bool *isNewNativeImage parameter.
• Updated the implementation in nativeimage.cpp by removing all assignments to *isNewNativeImage and aligning the signature with the header.
• Simplified AssemblyBinder::LoadNativeImage in assemblybinder.cpp by removing the unused isNewNativeImage local and updating the call to NativeImage::Open.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
src/coreclr/vm/nativeimage.h	Adjusts the NativeImage::Open API to remove the unused out parameter from the declaration.
src/coreclr/vm/nativeimage.cpp	Keeps the implementation in sync with the new signature and removes dead assignments to isNewNativeImage.
src/coreclr/vm/assemblybinder.cpp	Cleans up the only call site by removing the unused local and calling the simplified NativeImage::Open overload.