GFX13: Fix warning: lambda capture 'this' is not used (#3246)

Author: jayfoad

llvm/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp

@@ -922,9 +922,9 @@ void AMDGPUTargetMachine::registerPassBuilderCallbacks(PassBuilder &PB) {
         PM.addPass(createCGSCCToFunctionPassAdaptor(std::move(FPM)));
       });
 
-  PB.registerOptimizerEarlyEPCallback([this](ModulePassManager &MPM,
-                                             OptimizationLevel Level,
-                                             ThinOrFullLTOPhase Phase) {
+  PB.registerOptimizerEarlyEPCallback([](ModulePassManager &MPM,
+                                         OptimizationLevel Level,
+                                         ThinOrFullLTOPhase Phase) {
     MPM.addPass(AMDGPURankSpecializationPass());
   });