Remove preserve_ops and consolidate decomp_table

.ci/docker/ci_commit_pins/pytorch.txt

@@ -1 +1 @@
-00e3eea170ce5db8ea9c62ce5e48f13886cd6d20
+export-D62539799

exir/program/_program.py

@@ -924,9 +924,12 @@ def _gen_edge_manager_for_partitioners(
                 curr_ops_no_decomp, _ = curr_partitioner.ops_to_not_decompose(program)
                 all_ops_no_decomp |= set(curr_ops_no_decomp)
 
-            program = program.run_decompositions(
-                _default_decomposition_table(), _preserve_ops=tuple(all_ops_no_decomp)
-            )
+            decomp_table = _default_decomposition_table()
+            for op in all_ops_no_decomp:
+                if op in decomp_table:
+                    del decomp_table[op]
+
+            program = program.run_decompositions(decomp_table)
             # Among all the preserved aten ops, use the check_op_fn to do an additional
             # check on which ops need to be preserved and which ops need to be decomposed
             # Those which are truly preserved will be replaced with transformed ops

exir/program/test/test_program.py

@@ -574,10 +574,12 @@ def get_num_nondecomposed_ops(self, ep, partitioner):
         # which pass the filter_ops fn given by the partitioner
         reference_ep = copy.deepcopy(ep)
         aten_ops_not_decomposed, filter_ops = partitioner.ops_to_not_decompose(ep)
-        reference_decomp_ep = reference_ep.run_decompositions(
-            decomp_table=_default_decomposition_table(),
-            _preserve_ops=tuple(aten_ops_not_decomposed),
-        )
+        decomp_table = _default_decomposition_table()
+        for op in aten_ops_not_decomposed:
+            if op in decomp_table:
+                del decomp_table[op]
+        reference_decomp_ep = reference_ep.run_decompositions(decomp_table)
+
         num_non_decomposed_aten_ops = 0
         for node in reference_decomp_ep.graph.nodes:
             if (