[mlir][nvgpu] remove duplicated pattern (nfc)

Differential Revision: https://reviews.llvm.org/D158847

Author: grypp

mlir/lib/Conversion/NVGPUToNVVM/NVGPUToNVVM.cpp

@@ -1137,7 +1137,6 @@ void mlir::populateNVGPUToNVVMConversionPatterns(LLVMTypeConverter &converter,
       NVGPUTmaAsyncLoadOpLowering,           // nvgpu.tma.async.load
       NVGPUTmaCreateDescriptorOpLowering,    // nvgpu.tma.create.descriptor
       NVGPUMBarrierArriveExpectTxLowering,   // nvgpu.mbarrier.arrive.expect_tx
-      NVGPUTmaAsyncLoadOpLowering,           // nvgpu.tma.async.load
       NVGPUGenerateGmmaDescriptorLowering,   // nvgpu.wgmma.generate.descriptor
       MmaSyncOptoNVVM, MmaLdMatrixOpToNVVM, NVGPUAsyncCopyLowering,
       NVGPUAsyncCreateGroupLowering, NVGPUAsyncWaitLowering,