Remove useless DAG directive in pivot callee WITH

Author: winstonallo

tests/assembly-llvm/reg-struct-return.rs

@@ -78,8 +78,8 @@ mod Pivot {
     #[unsafe(no_mangle)]
     pub unsafe extern "C" fn pivot_callee() -> PivotStruct {
         // WITH-LABEL: pivot_callee
-        // WITH-DAG: movl $42, %e{{.*}}
-        // WITH-DAG: movl $42, %e{{.*}}
+        // WITH: movl $42, %e{{.*}}
+        // WITH: movl $42, %e{{.*}}
         // WITH: retl
 
         // WITHOUT-LABEL: pivot_callee