Revert "[mlir][OpenMP] Use correct debug location with link clause." (#145768)

Reverts #145026

Caused a CI failure on
https://lab.llvm.org/buildbot/#/builders/169/builds/12504.

Author: abidh

mlir/lib/Target/LLVMIR/Dialect/OpenMP/OpenMPToLLVMIRTranslation.cpp

@@ -4831,7 +4831,6 @@ handleDeclareTargetMapVar(MapInfoData &mapData,
                           llvm::IRBuilderBase &builder, llvm::Function *func) {
   assert(moduleTranslation.getOpenMPBuilder()->Config.isTargetDevice() &&
          "function only supported for target device codegen");
-  llvm::IRBuilderBase::InsertPointGuard guard(builder);
   for (size_t i = 0; i < mapData.MapClause.size(); ++i) {
     // In the case of declare target mapped variables, the basePointer is
     // the reference pointer generated by the convertDeclareTargetAttr
@@ -4866,7 +4865,6 @@ handleDeclareTargetMapVar(MapInfoData &mapData,
       for (llvm::User *user : userVec) {
         if (auto *insn = dyn_cast<llvm::Instruction>(user)) {
           if (insn->getFunction() == func) {
-            builder.SetCurrentDebugLocation(insn->getDebugLoc());
             auto *load = builder.CreateLoad(mapData.BasePointers[i]->getType(),
                                             mapData.BasePointers[i]);
             load->moveBefore(insn->getIterator());