Clean up build warning

core/src/validator.rs

@@ -1408,15 +1408,9 @@ fn report_target_features() {
         not(target_os = "macos")
     ))]
     {
-        unsafe { check_avx() };
-    }
-}
-
         // Validator binaries built on a machine with AVX support will generate invalid opcodes
         // when run on machines without AVX causing a non-obvious process abort.  Instead detect
         // the mismatch and error cleanly.
-#[target_feature(enable = "avx")]
-unsafe fn check_avx() {
         if is_x86_feature_detected!("avx") {
             info!("AVX detected");
         } else {
@@ -1426,6 +1420,7 @@ unsafe fn check_avx() {
             abort();
         }
     }
+}
 
 // Get the activated stake percentage (based on the provided bank) that is visible in gossip
 fn get_stake_percent_in_gossip(bank: &Bank, cluster_info: &ClusterInfo, log: bool) -> u64 {