Revert reversion of TensorFlow 2.9 update

With the errors caused by the previous TensorFlow 2.9 update
being fixed, we can proceed with the upgrade.

Signed-off-by: erik.andersson@arm.com <erik.andersson@arm.com>
Change-Id: Ie1f025e8d984efaebc68b8d051126d49bee6b2b8
diff --git a/ethosu/vela/tflite/BidirectionalSequenceRNNOptions.py b/ethosu/vela/tflite/BidirectionalSequenceRNNOptions.py
index 9e15c4b..e1f66ce 100644
--- a/ethosu/vela/tflite/BidirectionalSequenceRNNOptions.py
+++ b/ethosu/vela/tflite/BidirectionalSequenceRNNOptions.py
@@ -3,27 +3,17 @@
 # namespace: tflite
 
 import flatbuffers
-from flatbuffers.compat import import_numpy
-np = import_numpy()
 
 class BidirectionalSequenceRNNOptions(object):
     __slots__ = ['_tab']
 
     @classmethod
-    def GetRootAs(cls, buf, offset=0):
+    def GetRootAsBidirectionalSequenceRNNOptions(cls, buf, offset):
         n = flatbuffers.encode.Get(flatbuffers.packer.uoffset, buf, offset)
         x = BidirectionalSequenceRNNOptions()
         x.Init(buf, n + offset)
         return x
 
-    @classmethod
-    def GetRootAsBidirectionalSequenceRNNOptions(cls, buf, offset=0):
-        """This method is deprecated. Please switch to GetRootAs."""
-        return cls.GetRootAs(buf, offset)
-    @classmethod
-    def BidirectionalSequenceRNNOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
-        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
-
     # BidirectionalSequenceRNNOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
@@ -56,27 +46,9 @@
             return bool(self._tab.Get(flatbuffers.number_types.BoolFlags, o + self._tab.Pos))
         return False
 
-def Start(builder): builder.StartObject(4)
-def BidirectionalSequenceRNNOptionsStart(builder):
-    """This method is deprecated. Please switch to Start."""
-    return Start(builder)
-def AddTimeMajor(builder, timeMajor): builder.PrependBoolSlot(0, timeMajor, 0)
-def BidirectionalSequenceRNNOptionsAddTimeMajor(builder, timeMajor):
-    """This method is deprecated. Please switch to AddTimeMajor."""
-    return AddTimeMajor(builder, timeMajor)
-def AddFusedActivationFunction(builder, fusedActivationFunction): builder.PrependInt8Slot(1, fusedActivationFunction, 0)
-def BidirectionalSequenceRNNOptionsAddFusedActivationFunction(builder, fusedActivationFunction):
-    """This method is deprecated. Please switch to AddFusedActivationFunction."""
-    return AddFusedActivationFunction(builder, fusedActivationFunction)
-def AddMergeOutputs(builder, mergeOutputs): builder.PrependBoolSlot(2, mergeOutputs, 0)
-def BidirectionalSequenceRNNOptionsAddMergeOutputs(builder, mergeOutputs):
-    """This method is deprecated. Please switch to AddMergeOutputs."""
-    return AddMergeOutputs(builder, mergeOutputs)
-def AddAsymmetricQuantizeInputs(builder, asymmetricQuantizeInputs): builder.PrependBoolSlot(3, asymmetricQuantizeInputs, 0)
-def BidirectionalSequenceRNNOptionsAddAsymmetricQuantizeInputs(builder, asymmetricQuantizeInputs):
-    """This method is deprecated. Please switch to AddAsymmetricQuantizeInputs."""
-    return AddAsymmetricQuantizeInputs(builder, asymmetricQuantizeInputs)
-def End(builder): return builder.EndObject()
-def BidirectionalSequenceRNNOptionsEnd(builder):
-    """This method is deprecated. Please switch to End."""
-    return End(builder)
\ No newline at end of file
+def BidirectionalSequenceRNNOptionsStart(builder): builder.StartObject(4)
+def BidirectionalSequenceRNNOptionsAddTimeMajor(builder, timeMajor): builder.PrependBoolSlot(0, timeMajor, 0)
+def BidirectionalSequenceRNNOptionsAddFusedActivationFunction(builder, fusedActivationFunction): builder.PrependInt8Slot(1, fusedActivationFunction, 0)
+def BidirectionalSequenceRNNOptionsAddMergeOutputs(builder, mergeOutputs): builder.PrependBoolSlot(2, mergeOutputs, 0)
+def BidirectionalSequenceRNNOptionsAddAsymmetricQuantizeInputs(builder, asymmetricQuantizeInputs): builder.PrependBoolSlot(3, asymmetricQuantizeInputs, 0)
+def BidirectionalSequenceRNNOptionsEnd(builder): return builder.EndObject()