Remove old comment.

Author: mjp41

src/test/func/fixed_region/fixed_region.cc

@@ -21,7 +21,6 @@ int main()
 
   // 28 is large enough to produce a nested allocator.
   // It is also large enough for the example to run in.
-  // For 1MiB superslabs, SUPERSLAB_BITS + 4 is not big enough for the example.
   auto size = bits::one_at_bit(28);
   auto oe_base = DefaultPal::reserve(size);
   DefaultPal::notify_using<NoZero>(oe_base, size);

src/test/func/multi_region/multi_region.cc

@@ -136,7 +136,6 @@ int main()
 
   // 28 is large enough to produce a nested allocator.
   // It is also large enough for the example to run in.
-  // For 1MiB superslabs, SUPERSLAB_BITS + 4 is not big enough for the example.
   auto size = bits::one_at_bit(28);
   auto base = DefaultPal::reserve(size);
   DefaultPal::notify_using<NoZero>(base, size);