[mlir][linalg] Remove redundant check on linalgOps to fix windows builder

[raikonenfnu]

Summary

One of the assertion is causing signed/unsigned mismatch. However this
assertion seems redundant and is no longer used.

[raikonenfnu]

should fix this issue https://lab.llvm.org/buildbot/#/builders/13/builds/26882

[raikonenfnu]

Hey Stella, FYI, the windows fix is up here. :)

[stella.stamenova]

In D135612#3847814, @raikonenfnu wrote:

Hey Stella, FYI, the windows fix is up here. :)

Thanks!

mlir/lib/Dialect/Linalg/IR/LinalgOps.cpp

deduplicateOutputOperands(GenericOp genericOp,
     auto yieldOp = cast<YieldOp>(genericOp.getBody()->getTerminator());
     for (const auto &outputOpOperand :
          llvm::enumerate(genericOp.getOutputOperands())) {
       OpResult result = genericOp.getTiedOpResult(outputOpOperand.value());
       AffineMap indexingMap =
           genericOp.getMatchingIndexingMap(outputOpOperand.value());
       auto key = std::make_tuple(outputOpOperand.value()->get(), indexingMap,
                                  yieldOp->getOperand(outputOpOperand.index()));
-      assert(static_cast<std::size_t>(genericOp.getNumOutputs()) >=
-                 outputOpOperand.index() &&
-             "Output op idx greater than number of outputs.");
       if (isResultValueDead(genericOp, result)) {
         // Check if the opoperand can be dropped without affecting loop
         // bound computation. Add the operand to the list of dropped op
         // operand for checking. If it cannot be dropped, need to pop the
         // value back.
         droppedOpOperands.push_back(outputOpOperand.value());
         if (genericOp.canOpOperandsBeDropped(droppedOpOperands)) {
           continue;