Update tests to use non-suffixed kwarg

Author: ashermancinelli

mlir/test/python/dialects/scf.py

@@ -436,7 +436,7 @@ def case_body_builder(switch_op, case_index: int, case_value: int):
             scf.yield_([arith.constant(i32, case_value)])
 
         result = scf.index_switch(
-            results_=[i32],
+            results=[i32],
             arg=index,
             cases=range(3),
             case_body_builder=case_body_builder,

mlir/test/python/ir/operation.py

@@ -1212,7 +1212,7 @@ def testIndexSwitch():
             @func.FuncOp.from_py_func(T.index())
             def index_switch(index):
                 c1 = arith.constant(i32, 1)
-                switch_op = scf.IndexSwitchOp(results_=[i32], arg=index, cases=range(3))
+                switch_op = scf.IndexSwitchOp(results=[i32], arg=index, cases=range(3))
 
                 assert len(switch_op.regions) == 4
                 assert len(switch_op.regions[2:]) == 2