app: remove bubblewrap launch method

Launch methods serve the primary purpose of setting UID in the init namespace, which bubblewrap does not do. Furthermore, all applications will start within a bubblewrap sandbox once it has been implemented.

Signed-off-by: Ophestra Umiker <cat@ophivana.moe>

flag.go

@@ -47,7 +47,7 @@ func init() {
 }
 
 func init() {
-	methodHelpString := "Method of launching the child process, can be one of \"sudo\", \"bubblewrap\""
+	methodHelpString := "Method of launching the child process, can be one of \"sudo\""
 	if internal.SdBootedV {
 		methodHelpString += ", \"systemd\""
 	}