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/SparsityParameters.py b/ethosu/vela/tflite/SparsityParameters.py
index 5da4692..de550a6 100644
--- a/ethosu/vela/tflite/SparsityParameters.py
+++ b/ethosu/vela/tflite/SparsityParameters.py
@@ -3,27 +3,17 @@
 # namespace: tflite
 
 import flatbuffers
-from flatbuffers.compat import import_numpy
-np = import_numpy()
 
 class SparsityParameters(object):
     __slots__ = ['_tab']
 
     @classmethod
-    def GetRootAs(cls, buf, offset=0):
+    def GetRootAsSparsityParameters(cls, buf, offset):
         n = flatbuffers.encode.Get(flatbuffers.packer.uoffset, buf, offset)
         x = SparsityParameters()
         x.Init(buf, n + offset)
         return x
 
-    @classmethod
-    def GetRootAsSparsityParameters(cls, buf, offset=0):
-        """This method is deprecated. Please switch to GetRootAs."""
-        return cls.GetRootAs(buf, offset)
-    @classmethod
-    def SparsityParametersBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
-        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
-
     # SparsityParameters
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
@@ -51,11 +41,6 @@
         return 0
 
     # SparsityParameters
-    def TraversalOrderIsNone(self):
-        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
-        return o == 0
-
-    # SparsityParameters
     def BlockMap(self, j):
         o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
         if o != 0:
@@ -78,11 +63,6 @@
         return 0
 
     # SparsityParameters
-    def BlockMapIsNone(self):
-        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
-        return o == 0
-
-    # SparsityParameters
     def DimMetadata(self, j):
         o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
         if o != 0:
@@ -102,40 +82,11 @@
             return self._tab.VectorLen(o)
         return 0
 
-    # SparsityParameters
-    def DimMetadataIsNone(self):
-        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
-        return o == 0
-
-def Start(builder): builder.StartObject(3)
-def SparsityParametersStart(builder):
-    """This method is deprecated. Please switch to Start."""
-    return Start(builder)
-def AddTraversalOrder(builder, traversalOrder): builder.PrependUOffsetTRelativeSlot(0, flatbuffers.number_types.UOffsetTFlags.py_type(traversalOrder), 0)
-def SparsityParametersAddTraversalOrder(builder, traversalOrder):
-    """This method is deprecated. Please switch to AddTraversalOrder."""
-    return AddTraversalOrder(builder, traversalOrder)
-def StartTraversalOrderVector(builder, numElems): return builder.StartVector(4, numElems, 4)
-def SparsityParametersStartTraversalOrderVector(builder, numElems):
-    """This method is deprecated. Please switch to Start."""
-    return StartTraversalOrderVector(builder, numElems)
-def AddBlockMap(builder, blockMap): builder.PrependUOffsetTRelativeSlot(1, flatbuffers.number_types.UOffsetTFlags.py_type(blockMap), 0)
-def SparsityParametersAddBlockMap(builder, blockMap):
-    """This method is deprecated. Please switch to AddBlockMap."""
-    return AddBlockMap(builder, blockMap)
-def StartBlockMapVector(builder, numElems): return builder.StartVector(4, numElems, 4)
-def SparsityParametersStartBlockMapVector(builder, numElems):
-    """This method is deprecated. Please switch to Start."""
-    return StartBlockMapVector(builder, numElems)
-def AddDimMetadata(builder, dimMetadata): builder.PrependUOffsetTRelativeSlot(2, flatbuffers.number_types.UOffsetTFlags.py_type(dimMetadata), 0)
-def SparsityParametersAddDimMetadata(builder, dimMetadata):
-    """This method is deprecated. Please switch to AddDimMetadata."""
-    return AddDimMetadata(builder, dimMetadata)
-def StartDimMetadataVector(builder, numElems): return builder.StartVector(4, numElems, 4)
-def SparsityParametersStartDimMetadataVector(builder, numElems):
-    """This method is deprecated. Please switch to Start."""
-    return StartDimMetadataVector(builder, numElems)
-def End(builder): return builder.EndObject()
-def SparsityParametersEnd(builder):
-    """This method is deprecated. Please switch to End."""
-    return End(builder)
\ No newline at end of file
+def SparsityParametersStart(builder): builder.StartObject(3)
+def SparsityParametersAddTraversalOrder(builder, traversalOrder): builder.PrependUOffsetTRelativeSlot(0, flatbuffers.number_types.UOffsetTFlags.py_type(traversalOrder), 0)
+def SparsityParametersStartTraversalOrderVector(builder, numElems): return builder.StartVector(4, numElems, 4)
+def SparsityParametersAddBlockMap(builder, blockMap): builder.PrependUOffsetTRelativeSlot(1, flatbuffers.number_types.UOffsetTFlags.py_type(blockMap), 0)
+def SparsityParametersStartBlockMapVector(builder, numElems): return builder.StartVector(4, numElems, 4)
+def SparsityParametersAddDimMetadata(builder, dimMetadata): builder.PrependUOffsetTRelativeSlot(2, flatbuffers.number_types.UOffsetTFlags.py_type(dimMetadata), 0)
+def SparsityParametersStartDimMetadataVector(builder, numElems): return builder.StartVector(4, numElems, 4)
+def SparsityParametersEnd(builder): return builder.EndObject()