target/hexagon/idef-parser: Remove unused code paths

Removes code paths used by COF instructions, which are no longer
processed by idef-parser.

Tested-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Signed-off-by: Anton Johansson <anjo@rev.ng>
Message-Id: <20230131223133.8592-1-anjo@rev.ng>
5 files changed