Fix clippy::legacy_numeric_constants lints

src/lib.rs

@@ -939,7 +939,7 @@ impl<A: Array> SmallVec<A> {
             //
             // In our case, this also ensures that a smallvec of zero-size items never spills,
             // and we never try to allocate zero bytes which `std::alloc::alloc` disallows.
-            core::usize::MAX
+            usize::MAX
         }
     }
 
@@ -1397,7 +1397,7 @@ impl<A: Array> SmallVec<A> {
         }
 
         let (lower_size_bound, _) = iter.size_hint();
-        assert!(lower_size_bound <= core::isize::MAX as usize); // Ensure offset is indexable
+        assert!(lower_size_bound <= isize::MAX as usize); // Ensure offset is indexable
         assert!(index + lower_size_bound >= index); // Protect against overflow
 
         let mut num_added = 0;