Remove DEBUG_LEVEL_APP_ONLY

Bug: 260147409, 203369076
Test: atest MicrodroidHostTestCases;
atest MicrodroidTestApp;
atest ComposHostTestCases

Change-Id: Ia12019519766a01495ce4305ea8029e11317ca7d
diff --git a/vm/src/main.rs b/vm/src/main.rs
index bc18fae..32b165b 100644
--- a/vm/src/main.rs
+++ b/vm/src/main.rs
@@ -85,7 +85,7 @@
         #[clap(long)]
         ramdump: Option<PathBuf>,
 
-        /// Debug level of the VM. Supported values: "none" (default), "app_only", and "full".
+        /// Debug level of the VM. Supported values: "none" (default), and "full".
         #[clap(long, default_value = "none", value_parser = parse_debug_level)]
         debug: DebugLevel,
 
@@ -148,7 +148,7 @@
         #[clap(long)]
         ramdump: Option<PathBuf>,
 
-        /// Debug level of the VM. Supported values: "none" (default), "app_only", and "full".
+        /// Debug level of the VM. Supported values: "none" (default), and "full".
         #[clap(long, default_value = "full", value_parser = parse_debug_level)]
         debug: DebugLevel,
 
@@ -233,7 +233,6 @@
 fn parse_debug_level(s: &str) -> Result<DebugLevel, String> {
     match s {
         "none" => Ok(DebugLevel::NONE),
-        "app_only" => Ok(DebugLevel::APP_ONLY),
         "full" => Ok(DebugLevel::FULL),
         _ => Err(format!("Invalid debug level {}", s)),
     }