[llvm] [MC][NFC] Drop unused MCDecodedPseudoProbeInlineTree::ChildrenToProcess (PR #100576)

[Amir Ayupov via llvm-commits]

https://github.com/aaupov created https://github.com/llvm/llvm-project/pull/100576

The usage was removed in 3f97016857b0305294f3a55ea220884fb50ce033.

Results in a slight peak RSS reduction in
`perf2bolt --profile-use-pseudo-probes` from 17.24 to 16.85 GiB.


>From d886d7b3b151f141c83bde69775b2621051eff85 Mon Sep 17 00:00:00 2001
From: Amir Ayupov <aaupov at fb.com>
Date: Thu, 25 Jul 2024 07:26:08 -0700
Subject: [PATCH] =?UTF-8?q?[=F0=9D=98=80=F0=9D=97=BD=F0=9D=97=BF]=20initia?=
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Created using spr 1.3.4
---
 llvm/include/llvm/MC/MCPseudoProbe.h | 2 --
 1 file changed, 2 deletions(-)

diff --git a/llvm/include/llvm/MC/MCPseudoProbe.h b/llvm/include/llvm/MC/MCPseudoProbe.h
index 5344dea4141b3..54a7f832e5008 100644
--- a/llvm/include/llvm/MC/MCPseudoProbe.h
+++ b/llvm/include/llvm/MC/MCPseudoProbe.h
@@ -280,8 +280,6 @@ class MCDecodedPseudoProbeInlineTree
                                          MCDecodedPseudoProbeInlineTree> {
 public:
   InlineSite ISite;
-  // Used for decoding
-  uint32_t ChildrenToProcess = 0;
 
   MCDecodedPseudoProbeInlineTree() = default;
   MCDecodedPseudoProbeInlineTree(const InlineSite &Site) : ISite(Site){};