Use lazy_rent_collection directly (solana-labs#22410)

runtime/src/bank.rs

@@ -4345,7 +4345,7 @@ impl Bank {
     }
 
     fn collect_rent_eagerly(&self) {
-        if !self.enable_eager_rent_collection() {
+        if self.lazy_rent_collection.load(Relaxed) {
             return;
         }
 
@@ -4370,14 +4370,6 @@ impl Bank {
         self.lazy_rent_collection.store(true, Relaxed);
     }
 
-    fn enable_eager_rent_collection(&self) -> bool {
-        if self.lazy_rent_collection.load(Relaxed) {
-            return false;
-        }
-
-        true
-    }
-
     fn rent_collection_partitions(&self) -> Vec<Partition> {
         if !self.use_fixed_collection_cycle() {
             // This mode is for production/development/testing.