apps: cam: capture_script: Disallow arrays of strings

The current `ControlValue` mechanism does not support arrays
of strings, the assignment in the removed snippet will in fact
trigger an assertion failure in `ControlValue::set()` because
`sizeof(std::string) != ControlValueSize[ControlTypeString]`.

Fixes: b35f04b3c1 ("cam: capture_script: Support parsing array controls")
Signed-off-by: Barnabás Pőcze <barnabas.pocze@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>

src/apps/cam/capture_script.cpp

@@ -578,10 +578,6 @@ ControlValue CaptureScript::parseArrayControl(const ControlId *id,
 		value = Span<const float>(values.data(), values.size());
 		break;
 	}
-	case ControlTypeString: {
-		value = Span<const std::string>(repr.data(), repr.size());
-		break;
-	}
 	default:
 		std::cerr << "Unsupported control type" << std::endl;
 		break;