mlxsw: spectrum_flower: Remove bogus warns in mlxsw_sp_flower_destroy

mlxsw: spectrum_flower: Remove bogus warns in mlxsw_sp_flower_destroy

This warnings may be hit even in case they should not - in case user
puts a TC-flower rule which failed to be offloaded. So just remove them.

Reported-by: Petr Machata <[email protected]>
Reported-by: Ido Schimmel <[email protected]>
Fixes: commit 7aa0f5aa9030 ("mlxsw: spectrum: Implement TC flower offload")
Signed-off-by: Jiri Pirko <[email protected]>
Acked-by: Ido Schimmel <[email protected]>
Signed-off-by: David S. Miller <[email protected]>