Fix for unused variable failure when trying to bump torch-mlir in IREE (#2560)

Due to blob being an unused variable, we are not able to bump torch-mlir
in iree. With this PR, we remove this unused variable.

Author: saienduri

lib/Conversion/TorchToArith/TorchToArith.cpp

@@ -191,8 +191,6 @@ class ConvertTorchTensorLiteralOp
               IntegerType::get(context, intType.getIntOrFloatBitWidth());
           auto shapedType =
               RankedTensorType::get(type.getShape(), builtinTensorElemTy);
-          AsmResourceBlob *blob = elements.getRawHandle().getBlob();
-          assert(blob && "Expecting dense resource with a valid blob");
           rewriter.replaceOpWithNewOp<arith::ConstantOp>(
               op, DenseResourceElementsAttr::get(shapedType,
                                                  elements.getRawHandle()));