Remove torch/legacy (#11823)

Summary:
Largely unused and hinders current development
Pull Request resolved: https://github.com/pytorch/pytorch/pull/11823

Differential Revision: D9925094

Pulled By: cpuhrsch

fbshipit-source-id: c797f62180e2128f9a567b0c57c8347957470ea5

1 files changed, 0 insertions, 38 deletions

diff --git a/torch/legacy/nn/DistKLDivCriterion.py b/torch/legacy/nn/DistKLDivCriterion.py
deleted file mode 100644
index 5aa175604a..0000000000
--- a/torch/legacy/nn/DistKLDivCriterion.py
+++ /dev/null
@@ -1,38 +0,0 @@
-import torch
-from torch.nn.functional import _Reduction
-from .Criterion import Criterion
-
-
-class DistKLDivCriterion(Criterion):
-
-    def __init__(self, sizeAverage=True):
-        super(DistKLDivCriterion, self).__init__()
-        self.sizeAverage = sizeAverage
-        self.output_tensor = torch.Tensor(1)
-
-    def updateOutput(self, input, target):
-        assert input.is_same_size(target)
-        if self.output_tensor is None:
-            self.output_tensor = input.new(1)
-        self._backend.DistKLDivCriterion_updateOutput(
-            self._backend.library_state,
-            input,
-            target,
-            self.output_tensor,
-            _Reduction.legacy_get_enum(self.sizeAverage, True, emit_warning=False),
-        )
-        self.output = self.output_tensor[0].item()
-        return self.output
-
-    def updateGradInput(self, input, target):
-        assert input.is_same_size(target)
-        implicit_gradOutput = torch.ones(1).type_as(input)
-        self._backend.DistKLDivCriterion_updateGradInput(
-            self._backend.library_state,
-            input,
-            target,
-            implicit_gradOutput,
-            self.gradInput,
-            _Reduction.legacy_get_enum(self.sizeAverage, True, emit_warning=False),
-        )
-        return self.gradInput