message: Reenable sort tests on IPU hw
  Summary:
  They were already reenabled, except for the IPU.
  Fixes T4414
  Reviewers: jakeh, davidn
  Maniphest Tasks: T4414
diff: @@ -14,7 +14,6 @@ OutOfMemoryTest.testOutputOutOfMemory # Don't do out of memory yet
  WhileTest.testCountingLoopHandrolledC64 # C64
  CategoricalTest.testSamplingCorrectness # Failing due to input size to poplibs reduction
  DepthwiseConv2DTest # Failing due to input size to poplibs convolution
  -XlaSortOpTest # No Sort op
  Pooling3DTest.testMaxPoolGradValidPadding1_1_3d # 3D grad_grad
  Pooling3DTest.testMaxPoolGradValidPadding2_1_6_3d # 3D grad_grad
  Pooling3DTest.testMaxPoolGradValidPadding2_2_3d # 3D grad_grad
  @@ -24,13 +23,11 @@ Pooling3DTest.testMaxPoolGradSamePadding2_2_3d # 3D grad_grad
  Pooling3DTest.testMaxPoolGradSamePadding3_1_3d # 3D grad_grad
  StatelessRandomOpsTest.testTruncatedNormalIsInRange # Too slow
  RandomOpsTest.testTruncatedNormalIsInRange # Too slow
  -RandomOpsTest.testShuffle1d # Need to implement 'sort'
  MatrixBandPartTest # Too slow
  UnaryOpsTest.testAllTypeOps # Need bitwise reductions
  QrOpTest.testLarge2000x2000 # Assertion in reduction
  GatherTest.testHigherRank # Bad
  MatrixTriangularSolveOpTest.testBatch # Arithmetic precision?
  -NonMaxSuppressionTest # Don't support sort
  XlaOpsTest.testShiftRightLogical # using UINT32
  XlaOpsTest.testShiftRightArithmetic # using UINT32
  