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/Pool2DOptions.py b/ethosu/vela/tflite/Pool2DOptions.py
index e7e1623..b8b9f17 100644
--- a/ethosu/vela/tflite/Pool2DOptions.py
+++ b/ethosu/vela/tflite/Pool2DOptions.py
@@ -3,27 +3,17 @@
 # namespace: tflite
 
 import flatbuffers
-from flatbuffers.compat import import_numpy
-np = import_numpy()
 
 class Pool2DOptions(object):
     __slots__ = ['_tab']
 
     @classmethod
-    def GetRootAs(cls, buf, offset=0):
+    def GetRootAsPool2DOptions(cls, buf, offset):
         n = flatbuffers.encode.Get(flatbuffers.packer.uoffset, buf, offset)
         x = Pool2DOptions()
         x.Init(buf, n + offset)
         return x
 
-    @classmethod
-    def GetRootAsPool2DOptions(cls, buf, offset=0):
-        """This method is deprecated. Please switch to GetRootAs."""
-        return cls.GetRootAs(buf, offset)
-    @classmethod
-    def Pool2DOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
-        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
-
     # Pool2DOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
@@ -70,35 +60,11 @@
             return self._tab.Get(flatbuffers.number_types.Int8Flags, o + self._tab.Pos)
         return 0
 
-def Start(builder): builder.StartObject(6)
-def Pool2DOptionsStart(builder):
-    """This method is deprecated. Please switch to Start."""
-    return Start(builder)
-def AddPadding(builder, padding): builder.PrependInt8Slot(0, padding, 0)
-def Pool2DOptionsAddPadding(builder, padding):
-    """This method is deprecated. Please switch to AddPadding."""
-    return AddPadding(builder, padding)
-def AddStrideW(builder, strideW): builder.PrependInt32Slot(1, strideW, 0)
-def Pool2DOptionsAddStrideW(builder, strideW):
-    """This method is deprecated. Please switch to AddStrideW."""
-    return AddStrideW(builder, strideW)
-def AddStrideH(builder, strideH): builder.PrependInt32Slot(2, strideH, 0)
-def Pool2DOptionsAddStrideH(builder, strideH):
-    """This method is deprecated. Please switch to AddStrideH."""
-    return AddStrideH(builder, strideH)
-def AddFilterWidth(builder, filterWidth): builder.PrependInt32Slot(3, filterWidth, 0)
-def Pool2DOptionsAddFilterWidth(builder, filterWidth):
-    """This method is deprecated. Please switch to AddFilterWidth."""
-    return AddFilterWidth(builder, filterWidth)
-def AddFilterHeight(builder, filterHeight): builder.PrependInt32Slot(4, filterHeight, 0)
-def Pool2DOptionsAddFilterHeight(builder, filterHeight):
-    """This method is deprecated. Please switch to AddFilterHeight."""
-    return AddFilterHeight(builder, filterHeight)
-def AddFusedActivationFunction(builder, fusedActivationFunction): builder.PrependInt8Slot(5, fusedActivationFunction, 0)
-def Pool2DOptionsAddFusedActivationFunction(builder, fusedActivationFunction):
-    """This method is deprecated. Please switch to AddFusedActivationFunction."""
-    return AddFusedActivationFunction(builder, fusedActivationFunction)
-def End(builder): return builder.EndObject()
-def Pool2DOptionsEnd(builder):
-    """This method is deprecated. Please switch to End."""
-    return End(builder)
\ No newline at end of file
+def Pool2DOptionsStart(builder): builder.StartObject(6)
+def Pool2DOptionsAddPadding(builder, padding): builder.PrependInt8Slot(0, padding, 0)
+def Pool2DOptionsAddStrideW(builder, strideW): builder.PrependInt32Slot(1, strideW, 0)
+def Pool2DOptionsAddStrideH(builder, strideH): builder.PrependInt32Slot(2, strideH, 0)
+def Pool2DOptionsAddFilterWidth(builder, filterWidth): builder.PrependInt32Slot(3, filterWidth, 0)
+def Pool2DOptionsAddFilterHeight(builder, filterHeight): builder.PrependInt32Slot(4, filterHeight, 0)
+def Pool2DOptionsAddFusedActivationFunction(builder, fusedActivationFunction): builder.PrependInt8Slot(5, fusedActivationFunction, 0)
+def Pool2DOptionsEnd(builder): return builder.EndObject()