Remove duplicate check

Author: oksbsb

compiler/rustc_session/src/session.rs

@@ -1469,10 +1469,7 @@ pub fn build_session(
     let asm_arch =
         if target_cfg.allow_asm { InlineAsmArch::from_str(&target_cfg.arch).ok() } else { None };
 
-    // Check jobserver before getting `jobserver::client`.
-    jobserver::check(|err| {
-        handler.early_warn_with_note(err, "the build environment is likely misconfigured")
-    });
+    // need Check jobserver before getting `jobserver::client`. which called in run_compiler
 
     let sess = Session {
         target: target_cfg,