Update the PartitionAlloc documentation.

base/allocator/partition_allocator/partition_alloc.h

Index: base/allocator/partition_allocator/partition_alloc.h
diff --git a/base/allocator/partition_allocator/partition_alloc.h b/base/allocator/partition_allocator/partition_alloc.h
index c720a50a638dad207e954fdd8500f7a1622f921b..f9c1df61940ddaac2b7a262b9f2e7090e14a8c9f 100644
--- a/base/allocator/partition_allocator/partition_alloc.h
+++ b/base/allocator/partition_allocator/partition_alloc.h
@@ -874,9 +874,6 @@ ALWAYS_INLINE size_t PartitionAllocGetSize(void* ptr) {
   return PartitionCookieSizeAdjustSubtract(size);
 }
 
-// N (or more accurately, N - sizeof(void*)) represents the largest size in
-// bytes that will be handled by a SizeSpecificPartitionAllocator.
-// Attempts to partitionAlloc() more than this amount will fail.
 template <size_t N>
 class SizeSpecificPartitionAllocator {
  public: