chore(kimi-build): drop dead check_bundle command

The SEA-era bundle checker has no callers and its validation target
(bundled TS entry) no longer exists after G-7; remove the subcommand and
module.

Author: 7723qqq

packages/kimi-build/src/check_bundle/mod.rs

@@ -1,6 +1,5 @@
 use clap::{Parser, Subcommand};
 
-mod check_bundle;
 mod inject;
 
 #[derive(Parser)]
@@ -22,11 +21,6 @@ enum Commands {
         #[arg(short = 'o', long)]
         output: Option<String>,
     },
-    /// Check a bundled JS file for unresolved external requires/imports
-    CheckBundle {
-        /// Path to the bundled JS file to check
-        path: String,
-    },
 }
 
 fn main() -> anyhow::Result<()> {
@@ -37,9 +31,6 @@ fn main() -> anyhow::Result<()> {
             inject::run(&input, &blob, &output)?;
             println!("Injected SEA blob into {}", output);
         }
-        Commands::CheckBundle { path } => {
-            check_bundle::check_bundle(&path)?;
-        }
     }
     Ok(())
 }