NXP backend: Remove optimization in prune_reshape_operators.py (#13413)

### Summary
Remove unnecessary optimization in prune_reshape_operators.py in IR
optimizer.

### Test plan
All tests where a subgraph is delegated to Neutron.

cc @digantdesai @JakeStevens @robert-kalmar @Pop-korn

Author: roman-janik-nxp

backends/nxp/backend/ir/tflite_optimizer/optimizations/prune_reshape_operators.py

@@ -36,10 +36,6 @@
     FuseParallelQuantizeOperators,
     PruneQuantizeOperators,
 )
-from executorch.backends.nxp.backend.ir.tflite_optimizer.optimizations.prune_reshape_operators import (
-    FuseReshapeOperators,
-    RemoveReshapeOperatorsWithNoEffect,
-)
 from executorch.backends.nxp.backend.ir.tflite_optimizer.optimizations.prune_transpose_operators import (
     FuseTransposeOperators,
     RemoveIdentityTransposeOperators,
@@ -54,9 +50,6 @@ class Optimization(Enum):
     FUSE_ACTIVATION_FUNCTIONS = 1
     FUSE_FULLY_CONNECTED_AND_ADD = 2
 
-    FUSE_RESHAPE_OPERATORS = 3
-    REMOVE_RESHAPE_OPERATORS_WITH_NO_EFFECT = 4
-
     FUSE_TRANSPOSE_OPERATORS = 5
     REMOVE_IDENTITY_TRANSPOSE_OPERATORS = 6
 
@@ -107,12 +100,6 @@ def __init__(
             Optimization.FUSE_FULLY_CONNECTED_AND_ADD: FuseFullyConnectedAndAddOperators(
                 builder, conversion_config
             ),
-            Optimization.FUSE_RESHAPE_OPERATORS: FuseReshapeOperators(
-                builder, conversion_config
-            ),
-            Optimization.REMOVE_RESHAPE_OPERATORS_WITH_NO_EFFECT: RemoveReshapeOperatorsWithNoEffect(
-                builder, conversion_config
-            ),
             Optimization.FUSE_TRANSPOSE_OPERATORS: FuseTransposeOperators(
                 builder, conversion_config
             ),