Revert "[AMDGPU] Run LowerLDS at the end of the fullLTO pipeline (#75333)"

This reverts commit 9b98692.

Author: Pierre-vh

llvm/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp

@@ -793,15 +793,6 @@ void AMDGPUTargetMachine::registerPassBuilderCallbacks(
 
         PM.addPass(createCGSCCToFunctionPassAdaptor(std::move(FPM)));
       });
-
-  PB.registerFullLinkTimeOptimizationLastEPCallback(
-      [this](ModulePassManager &PM, OptimizationLevel Level) {
-        // We want to support the -lto-partitions=N option as "best effort".
-        // For that, we need to lower LDS earlier in the pipeline before the
-        // module is partitioned for codegen.
-        if (EnableLowerModuleLDS)
-          PM.addPass(AMDGPULowerModuleLDSPass(*this));
-      });
 }
 
 int64_t AMDGPUTargetMachine::getNullPointerValue(unsigned AddrSpace) {