mod: remove duplicates

README.md

@@ -239,7 +239,6 @@ TOC is generated by [markdown-toc](https://github.com/jonschlinkert/markdown-toc
 - [bcrist/Zig-TempAllocator](https://github.com/bcrist/Zig-TempAllocator) : Arena allocator for interactive programs and simulations.
 - [rdunnington/zig-stable-array](https://github.com/rdunnington/zig-stable-array) : Address-stable array with a max size that allocates directly from virtual memory.
 - [dweiller/zimalloc](https://github.com/dweiller/zimalloc) : zimalloc is general purpose allocator for Zig, inspired by [mimalloc](https://github.com/microsoft/mimalloc).
-- [suirad/Seal](https://github.com/suirad/Seal) : An allocator that wraps another allocator and detects if memory is leaked after usage.
 - [Hejsil/zig-gc](https://github.com/Hejsil/zig-gc) :A super simple mark-and-sweep garbage collector written in Zig.
 
 ## Asynchronous Runtime