kas-container: remove special handling of help sub command

This patch removes the special handling of the -h / --help flag for kas
subcommands. By that, the build system detection logic properly works
and runs the help command in the kas-isar container for ISAR kas files.

While this logically does not make any difference, it avoids to pull the
kas OE container for ISAR builds, just to show the help message.

Signed-off-by: Felix Moessbauer <felix.moessbauer@siemens.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>

kas-container

@@ -320,13 +320,6 @@ KAS_EXTRA_BITBAKE_ARGS=0
 # parse kas sub-command options
 while [ $# -gt 0 ] && [ $KAS_EXTRA_BITBAKE_ARGS -eq 0 ]; do
 	case "$1" in
-	-h|--help)
-		set_container_image_var
-		# SC2086: Double quote to prevent globbing and word splitting.
-		# shellcheck disable=2086
-		trace ${KAS_CONTAINER_COMMAND} run ${KAS_CONTAINER_IMAGE} ${KAS_CMD} --help
-		exit 0
-		;;
 	--skip|--target|--task)
 		KAS_OPTIONS="${KAS_OPTIONS} $1 $2"
 		shift 2