Revert "Add a TODO with potential CheckAny optimization"

This reverts commit 2d49938c2a8be4ed10f2392d01cc0665c24a776a.

Implemented suggestion results in increased table sizes on average.
The number of elements in scopes is too small for the suggestion to be
beneficial.

Author: s-barannikov

llvm/utils/TableGen/DecoderEmitter.cpp

@@ -1663,11 +1663,6 @@ void DecoderTableEmitter::emitCheckAnyNode(const CheckAnyNode *N,
     return;
   }
 
-  // TODO: Emit single OPC_Scope and check at runtime where the scope ends.
-  //   Not that it would save much space: OPC_Scope means we've resolved
-  //   a conflict, and there aren't many of them. AMDGPU is an exception,
-  //   it has ~3.5K OPC_Scope opcodes, but most, if not all scopes contain
-  //   only two children.
   for (const DecoderTreeNode *Child : drop_end(N->children())) {
     emitOpcode("OPC_Scope");
     emitULEB128(computeNodeSize(Child));