[CodeGen][NewPM] MachineCopyPropagation Remove dead ID

[optimisan]

Fix for #125202 (4313345)
(supposed to be "unused ID")

[llvmbot]

@llvm/pr-subscribers-llvm-regalloc

Author: Akshat Oke (optimisan)

Changes

Fix for #125202 (4313345)

---

Full diff: https://github.com/llvm/llvm-project/pull/125665.diff

1 Files Affected:

• (modified) llvm/lib/CodeGen/MachineCopyPropagation.cpp (-2)

diff --git a/llvm/lib/CodeGen/MachineCopyPropagation.cpp b/llvm/lib/CodeGen/MachineCopyPropagation.cpp
index e9b3e96218f793..460749a739c763 100644
--- a/llvm/lib/CodeGen/MachineCopyPropagation.cpp
+++ b/llvm/lib/CodeGen/MachineCopyPropagation.cpp
@@ -459,8 +459,6 @@ class MachineCopyPropagation {
   bool UseCopyInstr;
 
 public:
-  static char ID; // Pass identification, replacement for typeid
-
   MachineCopyPropagation(bool CopyInstr = false)
       : UseCopyInstr(CopyInstr || MCPUseCopyInstr) {}