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/Conv2DOptions.py b/ethosu/vela/tflite/Conv2DOptions.py
index 33a8569..ef49f75 100644
--- a/ethosu/vela/tflite/Conv2DOptions.py
+++ b/ethosu/vela/tflite/Conv2DOptions.py
@@ -3,27 +3,17 @@
 # namespace: tflite
 
 import flatbuffers
-from flatbuffers.compat import import_numpy
-np = import_numpy()
 
 class Conv2DOptions(object):
     __slots__ = ['_tab']
 
     @classmethod
-    def GetRootAs(cls, buf, offset=0):
+    def GetRootAsConv2DOptions(cls, buf, offset):
         n = flatbuffers.encode.Get(flatbuffers.packer.uoffset, buf, offset)
         x = Conv2DOptions()
         x.Init(buf, n + offset)
         return x
 
-    @classmethod
-    def GetRootAsConv2DOptions(cls, buf, offset=0):
-        """This method is deprecated. Please switch to GetRootAs."""
-        return cls.GetRootAs(buf, offset)
-    @classmethod
-    def Conv2DOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
-        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
-
     # Conv2DOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
@@ -70,35 +60,11 @@
             return self._tab.Get(flatbuffers.number_types.Int32Flags, o + self._tab.Pos)
         return 1
 
-def Start(builder): builder.StartObject(6)
-def Conv2DOptionsStart(builder):
-    """This method is deprecated. Please switch to Start."""
-    return Start(builder)
-def AddPadding(builder, padding): builder.PrependInt8Slot(0, padding, 0)
-def Conv2DOptionsAddPadding(builder, padding):
-    """This method is deprecated. Please switch to AddPadding."""
-    return AddPadding(builder, padding)
-def AddStrideW(builder, strideW): builder.PrependInt32Slot(1, strideW, 0)
-def Conv2DOptionsAddStrideW(builder, strideW):
-    """This method is deprecated. Please switch to AddStrideW."""
-    return AddStrideW(builder, strideW)
-def AddStrideH(builder, strideH): builder.PrependInt32Slot(2, strideH, 0)
-def Conv2DOptionsAddStrideH(builder, strideH):
-    """This method is deprecated. Please switch to AddStrideH."""
-    return AddStrideH(builder, strideH)
-def AddFusedActivationFunction(builder, fusedActivationFunction): builder.PrependInt8Slot(3, fusedActivationFunction, 0)
-def Conv2DOptionsAddFusedActivationFunction(builder, fusedActivationFunction):
-    """This method is deprecated. Please switch to AddFusedActivationFunction."""
-    return AddFusedActivationFunction(builder, fusedActivationFunction)
-def AddDilationWFactor(builder, dilationWFactor): builder.PrependInt32Slot(4, dilationWFactor, 1)
-def Conv2DOptionsAddDilationWFactor(builder, dilationWFactor):
-    """This method is deprecated. Please switch to AddDilationWFactor."""
-    return AddDilationWFactor(builder, dilationWFactor)
-def AddDilationHFactor(builder, dilationHFactor): builder.PrependInt32Slot(5, dilationHFactor, 1)
-def Conv2DOptionsAddDilationHFactor(builder, dilationHFactor):
-    """This method is deprecated. Please switch to AddDilationHFactor."""
-    return AddDilationHFactor(builder, dilationHFactor)
-def End(builder): return builder.EndObject()
-def Conv2DOptionsEnd(builder):
-    """This method is deprecated. Please switch to End."""
-    return End(builder)
\ No newline at end of file
+def Conv2DOptionsStart(builder): builder.StartObject(6)
+def Conv2DOptionsAddPadding(builder, padding): builder.PrependInt8Slot(0, padding, 0)
+def Conv2DOptionsAddStrideW(builder, strideW): builder.PrependInt32Slot(1, strideW, 0)
+def Conv2DOptionsAddStrideH(builder, strideH): builder.PrependInt32Slot(2, strideH, 0)
+def Conv2DOptionsAddFusedActivationFunction(builder, fusedActivationFunction): builder.PrependInt8Slot(3, fusedActivationFunction, 0)
+def Conv2DOptionsAddDilationWFactor(builder, dilationWFactor): builder.PrependInt32Slot(4, dilationWFactor, 1)
+def Conv2DOptionsAddDilationHFactor(builder, dilationHFactor): builder.PrependInt32Slot(5, dilationHFactor, 1)
+def Conv2DOptionsEnd(builder): return builder.EndObject()