remove redunant compare of previous and 1

since that's what the compare_exchange does...

src/config/hashing.rs

@@ -55,7 +55,7 @@ impl HokmaLock {
                 .lock
                 .compare_exchange(1, 1, Ordering::Acquire, Ordering::Relaxed)
             {
-                if previous != 1 {
+                // If we failed, previous cannot be 1
                 return WhenTheHokmaSuppression {
                     hokma: self,
                     state: previous,
@@ -64,7 +64,6 @@ impl HokmaLock {
         }
     }
 }
-}
 
 struct WhenTheHokmaSuppression {
     hokma: &'static HokmaLock,