ASoC: topology: Remove ABI v4 support

There are no users of soc-topology ABI v4 since kernel v5.4 so remove
all v4 -> v5 converters.

Cc: Curtis Malainey <cujomalainey@chromium.org>
Cc: Łukasz Majczak <lmajczak@google.com>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://msgid.link/r/20240403091629.647267-3-cezary.rojewski@intel.com


Signed-off-by: Mark Brown <broonie@kernel.org>