x86: Fix reg marked as live in vectorizedHashCode

The result register from inline vectorizedHashCode
implementation is marked as live at the end of the method.
The call node->setRegister(result) should not happen twice.

Issue: #20824

Signed-off-by: Bradley Wood <[email protected]>

Author: BradleyWood

runtime/compiler/x/codegen/J9TreeEvaluator.cpp

@@ -9686,7 +9686,6 @@ J9::X86::TreeEvaluator::vectorizedHashCodeHelper(TR::Node *node, TR::DataType dt
    cg->stopUsingRegister(index);
    cg->stopUsingRegister(tmp);
 
-   node->setRegister(result);
    cg->decReferenceCount(node->getChild(0));
    cg->decReferenceCount(node->getChild(1));
    cg->decReferenceCount(node->getChild(2));